Aw mama, ganyan talaga ang bawat bata, some kids take their time with speech, while iba naman chatty na agad haha! Since he's almost 4 na, it's really worth bringing this up sa pedia para ma-assess kung may delays talaga or kung ito lang ang kanyang pace, kasi mas maaga ma-address, mas better ang results. In the meantime, try talking to him lots, reading together, and repeating words, walang pressure lang, bonding time din naman!