And it turns out that it works if you're taking care of a human infant or bottle feeding a kitten lol.
"Sleep when the baby sleeps!"
I have to add that even if you can't actually sleep, at least try to rest. For the past couple of days I've been getting up every 2-4 hours to feed a kitten and boy does it bring back nursing my daughter memories lol. Thankfully Munchkin seems to be doing a lot better now. When I found him, he was about 2 weeks old and still within newborn weight range (he weighed about 116 grams) and very, very weak. He was thankfully not too weak to eat, though, so I've been feeding him from a dropper. He still isn't gaining a ton of weight, but he's up to about 122g now and he's wobble walking and pooping (he wasn't pooping when we first started feeding him, and he could barely hold his head up).
I just felt like sharing what's been going on the past few days and bragging a little about my new little baby. I think he likes me lol. When my husband tries to feed him and stuff, if he hears my voice he starts squirming trying to move towards me :) He also purrs when I hold him or pet him, now, which is the cutest thing ever! I'll post a picture of him soon.