Is it normal for 3weeks old to go right back to sleep after feeding during the day ? I try to wake him up every 2hrs to feed him and he won’t stay awake. His awake time is so random. Sometimes it’s 3hrs and sometimes none. In the morning, he usually stays up for 3hrs and has hard time going to nap. And before bed time, he would be up for 2-3hrs. And he would grunt and is very noisy at night. Is it normal? Should I build better routine or go with the flow at this age ?