I'm trying to teach my 8 month old to self soothe herself to sleep instead of falling asleep nursing in an effort to get her to sleep better at night. She's waking me up every 2-4 hours and won't go back down until she's fed. She's old enough she shouldn't need to eat at night. I've been checking in on her every 5 minutes for the past 20 minutes and she's still screaming her head off every time I leave the room. At what point do I give up, conclude she must not be tired, and pick her up? I'm starting to feel like all I'm doing is upsetting us both.