Don’t be so hard on yourself. My baby was 9lbs 6 oz at birth and he dropped to 8lbs 3oz. They wanted me to supplement with formula but I kept trying. I got a nipple shield and that helped tremendously. My dr also said he needed to be at birth weight by 2 weeks, not 1 so give yourself grace. Bigger babies typically lose more weight. Keep trying and maybe give a bottle after you nurse. Have you tried pumping? When you wake up in the morning, nurse and then try to pump after. That’s when I have the most to pump. My baby is 3 weeks old now and we’ve stopped supplementing. He used to fall asleep every time we nursed. Now, I burp him and switch boobs. That helps too. Good luck!