your son is doing great. don't worry momshi. paunti unti bubuo na din yan ng sentence kahit di maintindihan ang words.
my son is turning 2 on july. keep talking to your son. wag baby talk. yung normal lang. wag din pilitin mag salita kahit na may itinuturo ka na word. repetition of words na tinuturo mo sometimes help. if may sinabi xang word like mama, i wold reply. i would make a conversation kahit di ko naiintindihan mga bago nyang words. ngayun nakakabuo na baby ko ng "sentence" like , "mama laba(labas) ika(halika)" meaning gusto nya lumabas kami sa garahe namin. using games at panonood help kaya alam din nya na ang spider at gagamba ay iisa lang.
just talk, communicate. wag ibabad sa gadget at youtube si baby. kung di maiwasan, supervise. react once in a while to create conversation. hope my experience helps.
Magbasa pa