My 8 weeks baby is unsettled

Hey there mummies. Im hitting the 8th week. Baby feeds 120mls per feed between 2-3hours, after feed will still demand for milk. Denies wake windows, wants to go back to sleep right after or she will cry it out. Tried tummy time. Tried nappy change. Tried giving a warm bath. Burped her several times. Pooping well. Wet diapers every nappy change. But she seemed so fussy out of a sudden. Swaddled, white noise. Dark room at night. Bright room for day naps. Tried flashcards and taking her for a 5-10mins walk but she just wants to sleep right after feeding. A little late she will be angry. Im burn out :’(