3weeks postpartum

How do you mamas do it I’m 3weeks postpartum not the lucky one to have help from family just my husband he works and helps a lot but when I’m alone most of the day it takes a toll on me mentally bc my milk has dropped and I can’t keep up with my little guy he can eat! He finishes 2 oz and then cry’s wants another 2 sometimes I’m only even getting 1oz or less I don’t think there’s anything wrong with formula but you know when you put a goal in your head you want to achieve it ? I feel like I’m failing at everything I love my baby and want the best for him!