DS was 4 in June, he started school in September and during our parents evening they mentioned he could work on areas of his speech.
A bit of background is that he didn't really say any words until he was 2 and not reliably talking until he was 3 so he's possibly always been delayed in this area but as a pfb on both sides of the family and also looked after by MIL until he started preschool 3 days a week from 3yo we thought it would develop once he was around his peers.
But after a year of preschool and half a term of school he's come a long way but sounds babyish compared to others in his year group. Since parents evening we've been practicing /l/ and /r/ sounds but he's struggling.
Am I right to be worried or will this all work out?