Should I have a schedule for my 2 months? But how am I going to do it? He wakes up 1 or 2 hrs for milk. How can I make him sleep more at night? Or is he too young to start as he need his milk in the night.

You can start with a bedtime routine first. 2 months maybe a little too much for sleep training i personally feel that. the initial 3 months is tiring, but it will get better after the 3rd month. evening time you can start off with a body wipedown. dim the room light, and maybe on some music or lullaby so baby can associate these with bedtime. Once you stick to this routine, baby will slowly adapt and sleep longer at night too