The early weeks can be very hard and illness on top of that makes it even harder! Glad you're getting a bit of a break - take things as easily as you can. It will get easier with a bit of time.
Frequent feeding in teh afternoon/evening is really normal - it's the arsenic hours when they need extra comforting. The upside of the clusster feeds is that they often then have a longer sleep at the start of the night.
Make sure you keep on top of any soreness or nipple damage, don't want that to get worse.