Do you wake your sleeping baby?

My daughter is 8 days old and went 5 hours of sleep between bottles. Now she hardly slept last night because of bad gas and then we had her at the doctors this morning which she did not like. I’ve read that you need to wake the baby for their feeding every 3 hours, but I also feel like if she is staying asleep then that means her body needs it. Just want to know your thoughts and what you do