My 2 week old is gaining properly, has plenty of wet and poopy diapers but he loves his sleep. I've been waking him up as recommended during the day (every three hours), but at night he'll sleep for 5+ hours most nights. When I do wake him to eat at night he'll have a quick 5 minute snack and then falls back asleep so I pump (for my own comfort). Is this OK? Also, at what point do I stop waking him every 3 hours during the day and just let him eat when he wants to? Thanks!