My DS is 11 weeks now and has been STTN on and off for a few weeks now. His sleep varies from 6 hours to 10 hours at night and I often wake up completely engorged. Doesn't your body eventually realize it needs to make less milk at night? If so... about how long does it take to do that? It's so nice to get more sleep but I often wake way before he does because my breasts are so full.