The short answer: expect the first genuine shifts in 4–8 weeks — more attempts, easier transitions, a first new word — and solid, generalised gains over 3–6 months. Anyone promising transformation in a fortnight is selling; anyone unable to show any written progress by week eight should be changing the plan, not renewing it.
Honest timelines, by therapy
Speech therapy: early shifts in 4–6 weeks (more initiation, attempts at target sounds, a word repeated at home); sustained gains over 3–6 months; many children step down in intensity after that.
ABA: first two weeks are assessment and relationship-building; first target skills emerge in weeks 3–8 — many families notice fewer meltdowns before they notice new skills; months 3–6 are where skills carry over into home life.
Occupational therapy: calmer transitions and bedtimes often inside the first month; measurable movement on handwriting, feeding range, and independence over months 2–4.
Early intervention (0–3): often the fastest to show visible change — the brain is at its most flexible, and parents are practising all week — with the first new words or imitations typically inside 4–8 weeks.
Why the first month looks quiet
The first weeks buy things that don’t look like results: an accurate assessment, a written plan, and a child who trusts the therapist. Skipping that stage produces faster-looking starts and slower actual progress. What you should have in month one is paperwork — a real plan, and weekly written notes tracking against it.
The metric that matters more than speed
Not “performs the skill in session” but “does it at Sunday breakfast without the therapist.” Skills that carried over into ordinary life are the ones that stay. This is why we put a parent in every session and end each one with one thing to repeat at home — the 30-minute session is the lesson; the week is the practice.
Our plans are reviewed against written data every four weeks by our developmental paediatrician — and if the data is flat, the plan changes. That review rhythm, more than any promised timeline, is what protects your investment. The first 30-minute consultation is free.
