He has a lot of words and forms simple sentences so he is doing well BUT
Car is HAR
Sky - HY
Cold - HOLD
Juice - Duce
Karl - Rar Rar
Steptoe (as in steptoe and son) - DEPDOE
would you worry???
He says a lot of the words correctly but then there are the few examples above and others where he is replacing the first letter with H or R in most cases except Juice lol.