Does babbling mean he will talk?

Hi,

 

My son is 2 years 4 months and has been seen by a paediatrician who believes he is on the spectrum (as do i). He will by assessed towards the end of the year.

We have had a couple of visits from the speech & language therapist who has helped us start to use PECS with him as he doesnt speak at all and becomes very frustrated. So far so good although i get the impression this will be along process. I wonder if anyone can share their experience in teaching their own child and how long it took.

Also, all the professionals we have seen seem to have been encouraged by the fact that he babbles and is very vocal but they havent indicated that this means he will talk. Does anyone know if it is the case that he will?

Tobys mummy x