Hi all breast feeding mummies! Advice please

What an incredible week I've had by daughter was born last Sunday. She's doing really well. Sleeping and breastfeeding. At first I was waiting til she stopped sucking one breast ( anything from about twelve to thirty minutes usually) the last few days I have been offering the second breast / I'm not keen on this as both breasts are getting tender each feeding and she's usually shattered so need to annoy her to get her to feed more. Plus my boobs still feel hate so I don't think she is literally emptying one side before pulling away I think she has had enough. Is offering the second breast always the best thing to do? Also what if she only does five mins on one side. And a lot longer the other side. For the next feed do I start with the breast that was used least recently or the one that was sucked on less the last feeding. Advice please 👍🏼👍🏼👍🏼🍼🍼🍼