FTM breast feeding help

My daughter is 6 days old today. I am worried that she isn't feeding enough at one time and I'm sure her latch isn't the best.. We were discharged from the hospital 22 hours after I had her.. So I didn't get much time with the nurses and the Lactation consultant never came and talked with me Like she was supposed to. I do have an appointment tomorrow with a lactation consultant but everytime I go to feed her I have the worst anxiety. She pushes against me with her hands and cries and kicks 😔 we had her first doctor appointment on Monday and she had gained 2 ounces since we left the hospital. Last night has been the worst, we were up literally all night. She was obviously hungry and I had to continuously try and get her to eat, when she did it was only for 5 minutes or so. I try switching positions, breasts, I strip her down to her diaper, I talk to her, I keep the room dim. And when she finally does latch most of the time she instantly falls asleep. I feel like I failure and it's breaking my heart!!! I have to wait 4 days for my breast pump because it's being shipped by my insurance so my SO can't try and bottle feed her either. Idk what to do! At my wits end! Now I understand how some moms give up and go to formula!!!!! I know she's learning and I'm learning and I feel like I have these thoughts of how it should be going and I know it's too soon to think I would be a professional breast feeder (lol) but these sleepless nights and thinking she's hungry are enough to drive me nuts!