So my little one is 7 weeks and he is eating for about 8 minutes on each side, both sides at each feeding during the day. Then at night he usually goes 5-6 hours in between is bedtime feeding and waking up to eat and he'll only eat for about 5-8 minutes on one side and go back to sleep. Then he just went 2 1/2 hours in between feeding. Is that normal for a 7 week old?