what is the feeding quantity and duration for one month old baby?????? i give him 30 ml formula milk and 30 ml pumped breast milk after ever 3 hours.... do I need to change the schedule please answer

A. the intake of every baby remains different so you will have to keep eye on the amount baby is taking and after taking feed baby remains comfortable for 3 hours then that must be the sufficient quantity you are giving to your baby don't feed your baby forcefully