I remember I have written a small passage about scale of speeach development. U might check but I dont remember iin which section.
ST and ABA method might have some help.
But what I want to stress is that
Pls remember two main components of a kid's speech level should be borne in mind.
Initiationand ability and remember initiation should go first.
So at home, u might encourage yr kid to speak whenever he likes and he needs...
Even in playing, my idea (when he was 2) is once he PRONOUNCES a sound, he will have some excitment in playing like tickling, flying high, carrying him to run across the house, etc...
Pls pls remember initiation, not ability always starts first
Take it easy. Most KG require finish toilet training by end of 1st semester only (i.e. 3 yr +) I started at 3yr3mo and ok by 3yr4mo, just 10-20 accidents during that one month. Once they can control and do simple expression training is a lot easier. So Don't drive yourself crazy now, put your effort to other training and come back when he is 3yr.