Falling asleep... need to stay awake

Ti

Sooooo mom baby girl and I are pretty good at breastfeeding now besides the fact that I can only feed her laying down because my flow is too fast and she’ll end up choking herself all the other ways. I tried laying back but she’s only three weeks and isn’t really big enough to get it yet. But the problem is that laying down is so damn comfortable I sometimes fall asleep when she’s breastfeeding and she does the same. Then an hour later or so I wake up not knowing how long she breastfed for and forgetting the time she started and she’s just laying beside me peacefully sleeping. I don’t want to sleep because after she feeds I need to burp her :((( I need to stay awake!!!! Anyone got any tips on ways to stay awake? It usually happens around four in the morning