Newborn

My daughter is one week & 3 days old. She is starting to become fussy when I try to latch her on my breasts. Once she is latched it's perfect but she goes crazy when it's time to latch. She also doesn't wake up 2-3 hours to feed. I have to wake her up but once she's awake she shows me how hungry she is. I tried to let her sleep longer to see if she'd wake up on her own but I didn't want to go past 4 hours. I'm positive she's eating well but I don't know sometimes because she'll break the latch herself and still show hunger signs, I don't want to overfeed her though -_- ftm here. Lol advice please! How long should she be feeding and how often?