So my SO mom offered to get up with LO last night since we have had zero sleep this week. I took her up on it. He is bf but I have started weaning to ff. Usually i bf through the night, in the morning and at night. He usually does a 3 to 4 hour stretch at night then up every hour. Last night he got formula since my SO mom got up with him. He did two 5 hour stretches! She has watched him for us twice over night and he did the same thing! I'm starting to think he's not getting enough breastmilk duing his middle of the night waking and that is why he's up so much! Thoughts?