When a person got a baby, he may deprived of proper sleep. Particularly those parents who have their first kid. And those parents ho have night babies; night baby means, the baby who sleep in day and more active in nights.
It is necessary for your baby's peaceful sleep and your own sleep too.
At beginning, if you feel that your baby is not comfortable with his new routine, then you should not force him to follow it, in anyway. You need to wait a few weeks more, and then try your schedule again. And you need to make sure an other thing also, that is about your baby's health. Sometimes kids are sick and they can't sleep peacefully and awake after short intervals.
In short, sound sleep is very important for your baby. Take care of your baby's sleep and health.