Masyadong maaga ba ang 2 years old para mag pre-school?

My son started mga 1.5 years old ung mga once a week lang na class like sa kindermusik. Then nung 2 siya inenroll ko na siya sa toddler class twice a week nageenjoy naman siya and nakikita ko na ready na rin, nag improve din ung socialization niya with other kids kaya I think mas early mas ok

Nah. Not too early. I think it's the right age. I read that kids' minds are like super sponges from 0-5. So it's best to provide them with as much good stimulation to build those learning neurons in their brains - because once they're older, it'll be harder to build those neurons.