Ok so LO has been asleep since..about 2:30pm or so. It's now a little after 5pm. Should I let her keep napping? Or wake her up if she doesn't wake up by 6pm, that's a 4 hour stretch between feedings. She usually sleeps all night, from about 10-11:30pm until 7:30-8am. She's used to a long stretch but I'm more worried about my milk supply...I do not wake and pump during the night, I just feed and pump when she wakes up in the morning....