Just some concerns and questions

My baby girl was born april 30th was due may 8th, she was so small, 5lbs, but shes def growed since, I supplement, because I have fear that my breastmilk is not enough for her, obviously cant get lactation counselor because the pandemic and distancing.. I fear this because everytime shes eating she gets frustrated at my boob and it feels empty, I never feel full anymore, which is why I give her formula because she always seems hungry still she has like 3 or 4 bottles a day, shes just suddenly always so hungry now but doesnt seem to get much breastmilk, she is gaining weight and goes through wet diapers and poops normally, but could that just be from the formula? She doesnt really like it sometimes and makes a grossed out face also dk anh other breast fed moms gain weight? I'm always so hungry! I keep snacks nearby lol