Sleepy baby?

FTM so I know this might sound stupid but can my baby be sleeping to much. I feel like she sleeps in long stretches and it makes me nervous. Also I had to start supplementing because my milk hasn't come in and her bili levels are high. She hasn't all of a sudden start having multiple poop diapers what seems like back to back. Sometimes I think it just comes out when she passes gas. And she doesn't even really get fussy with those... Should I be worried