Is she getting enough?

So my baby girl is turning 2 weeks tomorrow. From 2 days old the doc told me it’s ok to feed her on just one side if she’s getting enough. Said she should have about 5+ wet diapers a day and poop color should be yellow-orange to show she’s getting enough hind milk. Said she should be feeding 20-30 minutes.

All that was happening so great. Until yesterday night. She’s dropped down to only eating for about 13 minutes most feeds and then she’s OUT totally asleep and even if I can wake her she’s uninterested in continuing, even if I try the other side. Still having more than enough wet diapers, poop still yellow/orange.

How is she getting enough if her nursing time dropped in half! Is this something I can help? Does duration matter if she is still doing all the other things? She’s been a little congested too so I thought maybe the feeds were shorter because of trouble breathing but idk if that really factors?

Is this something I should concern a doctor with? Any advice or insight into this welcome.