Maybe track this child using an ECAT form (Every child a talker)
https://resources.leicestershire.gov...ing_tool-2.pdf - I find the 2nd page on pronunciation very useful
This is what it says for your mindees age
" 22-36 months Speech becoming clearer and usually understood by others by 36 months although some immature speech patterns are still evident.
May still substitute sounds or leave out last sound. Emerging sounds including k, g, f, s, z, l, y. "
I have a mindee who has trouble with many consonant sounds and most of the vowels sound the same - I found a list of pictures of cvc words (consonant, vowel, consonant) so doesn't include any blended sounds like pl, th, tr etc and I made a list of all the words and tried to write down exactly how she was saying them - I was able to work out exactly which sounds she was struggling with, which she was substituting and which where just non existent. I wrote all this in child's 2 year Progress report and Health Visitor asked me to refer her to Speech Therapy - I used my detailed observation and ECAT tracker as evidence on referral form and child is now waiting for assessment. I think the CVC list was on Sparklebox but I can't find the exact one I used now.