My ds is 7 days old. For the past 2 days he has been going 4 hrs between feeds and only waking for 1 feed over night. At the moment I have more than enough milk so my supply isn't an issue (I've been painfully engorged) but if he keeps going this way I'm worried I might not have enough milk for growth spurts or days when he's unsettled. My dd fed every 2-3 hrs as a new born and I never had supply issues. Should I express and freeze the milk or be waking him up? I've always thought never wake a sleeping baby, but now I'm not so sure.. Also he's a decent size baby and was back up to his birth weight by 5 days old. Any advice would be appreciated.