If speech therapy isn't working, it usually doesn't mean therapy is the wrong tool. It more often means something needs adjusting, the goals, the frequency, the practice happening at home, or something going on in your child's body that's making it harder for them to learn and use new skills right now.
I say this as a mom who has been in the waiting room wondering the same thing. My twins were in therapy, and it was the right thing for them to be doing. What changed things for us was adding food and gut support alongside their therapies, not instead of them. I'll explain more about that below, but the short version is: don't quit therapy. Troubleshoot it.
Slow progress in speech therapy is common and doesn't mean therapy isn't working or should be stopped. It usually means something needs adjusting, like the goals, session frequency, home practice, or something going on in your child's body such as sleep or GI discomfort that's making it harder for them to learn right now. Before changing therapists or giving up, work through a short checklist and talk specifics with your SLP.
There's no single timeline, and anyone who tells you an exact number of weeks or months is guessing. Progress in speech therapy varies widely from child to child. Some kids make a noticeable jump within a couple of months. Others need six months, a year, or longer before you see the shift you're hoping for. Age, how therapy is used, what else is going on developmentally, and consistency all play a part.
This is part of why "speech therapy not working" is such a common search. Parents are watching closely, session after session, and when progress is slow it's natural to wonder if something is wrong. Slow is not the same as stuck. But it's worth checking a few things before you decide therapy itself is the problem.
If you feel like you're seeing no progress in speech therapy, work through this list before deciding to switch therapists or stop altogether.
Here's a piece that often gets missed, not because therapists don't care, but because it falls outside what speech therapy covers. A child who doesn't feel well in their body has less capacity to learn, focus, and engage, no matter how good the therapy session is.
Things worth paying attention to:
A 2014 Pediatrics meta-analysis of 15 studies (McElhanon et al.) found that autistic children had about four times the odds of general gastrointestinal symptoms compared to other children, including about 3.9 times the odds of constipation, 3.6 times for diarrhea, and 2.5 times for abdominal pain. This doesn't tell us why speech is slow to progress for any individual child. It does tell us that GI discomfort is common in this population, and discomfort makes it harder for any child to show up fully for learning.
If your child deals with any of the above, it's worth a conversation with your pediatrician or a GI doctor. I write more about this connection in gut health and speech delay and autism and gut health, and if picky eating is part of your picture, picky eating autism tips and when your child only eats certain foods may help too.
Your speech therapist is your partner here, not an obstacle. Most SLPs want this conversation. Bring specifics instead of just "it's not working."
This kind of back-and-forth is normal and doesn't mean anyone failed. It means you're paying attention, which is exactly what your child needs from you.
I want to be direct about something parents often ask me: if speech therapy isn't working, why would changing food help? The honest answer is that food and gut support don't replace speech therapy, OT, or ABA. They're not a substitute for any of it. What they can do, for some kids, is support the body so the child has more capacity to use what therapy is teaching them.
That was true for my own twins. They were level 3 autistic and nonverbal. Their therapies mattered and we kept them going. Changing their gut health and food was the piece that made other things start working. I can't promise that for your child, every child is different, and results vary widely. Some families notice changes within a couple of months, others over six months or longer, and the order is usually sleep, bowel habits, and mood first, with speech and engagement often following later.
"When we first started this program end of May, my son had 12 words... over the last 3.5 months, he now has over 80 words, has been singing songs, he is pointing, and has said some 2-word phrases." — Lauren M. Results vary.
If you're curious how this looks alongside existing therapies rather than in place of them, I cover that in more detail in speech therapy, ABA, and diet. I also walk through how I approach food and gut support alongside therapy in a free live training, which you can join here, no pressure either way.
Reach out to your pediatrician if your child has ongoing constipation, diarrhea, or stomach pain, frequent illness, very disrupted sleep, or an extremely limited diet. These are worth medical attention on their own, separate from speech progress. A GI doctor or feeding therapist may be helpful depending on what's going on. Keep your pediatrician and your current therapy team in the loop about anything new you try, including changes to food. This article is education and parent coaching, not medical advice or treatment, and it doesn't replace your child's medical or therapy team.
About the author. Chelsea Juels, M.S. (@the_holistic_schoolpsych, The Holistic School Psych), is a mom of three, a Certified Nutritional Therapist with an autism focus, and holds an M.S. in School Psychology. Her twin boys were level 3 autistic and nonverbal; today they speak in full sentences. More about Chelsea.
This guide is educational and is not medical advice. Talk with your child's pediatrician about any medical, feeding or diet concerns. Individual results vary. Last reviewed October 2026.
There are usually a few possible reasons: the current goals may not match where your child is developmentally yet, sessions may not be frequent enough, there may not be much carryover practice happening at home, or something physical like poor sleep or stomach discomfort may be limiting your child's capacity to learn. It rarely means therapy itself is useless, it usually means something needs adjusting.
Before concluding it's not helping, get a hearing re-check, review whether the goals are sequenced right (understanding and gestures often need to come before words), and look at frequency and home practice. If you've addressed all of that and still see no progress in speech therapy over a meaningful stretch of time, it's reasonable to ask about a different approach or a second opinion.
There's no fixed timeline. Some children show noticeable change within a couple of months, others take six months or longer, and that doesn't necessarily reflect whether therapy is working. Consistency, frequency, home carryover, and your child's overall development and wellbeing all play a role.
Plateaus happen and don't automatically mean therapy has stopped working. For autistic kids especially, it's worth also looking at sleep, GI symptoms, and diet, since these can affect a child's capacity to engage and learn, alongside continuing speech therapy itself.
If you've given the current therapist real time, you're doing recommended home practice, and you still feel the approach isn't fitting your child, it's reasonable to ask for a different therapist or a second opinion. This is a normal part of finding the right fit, not a failure on anyone's part.
No. Food and gut support are not a replacement for speech therapy, OT, or ABA, and they won't fix a therapy plan that needs adjusting. For some children, supporting sleep, digestion, and nutrition alongside ongoing therapy seems to give them more capacity to use what therapy is teaching them. Results vary and every child is different.
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