LO sleeps 12 hours a night and doesn't eat that entire time. I've been attempting to compensate for that by feeding on demand throughout the day (we do about half breastmilk and half formula). But we are having so major spit up issues. I know it always seems like they are spitting up a ton when it isn't really that much but we are soaking multiple outfits and bibs a day. and I'm getting frequently covered in tons of undigested spit up. I'm not sure how much is too much. She doesnt seem overly fussy except for a minute or two right before. I don't know if I should cut down on the amount of formula I'm giving her, but since she sleeps so long at night I want to make sure she gets in enough calories. Should I try feeding her less? Smaller quantity more frequently? Resign to being covered in spit up? Anyone else go through this? (LO will be 10 weeks tomorrow and has been STTN for 3-4 weeks. She's gaining and growing normally.