Aww mama, I feel your stress, a few of us went through this transition din, at parang mas mahirap talaga mag-bottle feed at gabi kaya you're not alone! Since your baby's taking formula okay during the day (6 oz is good!), the night refusal might be comfort-seeking lang, babies sometimes prefer direct feeding at gabi kasi nakaka-assure sa kanila. Try warming the bottle a bit more, making sure the nipple flow matches what baby's used to, at maybe have papa or another family member offer the bottle so baby doesn't expect breasts from you? If the resistance continues or baby's not gaining weight okay, definitely check with your pedia kasi they can rule out any latch issues or if baby has reflux or something. You're doing great managing the transition, it really does get easier, I promise!