Advice for AI/Sub-I

I'm starting my medicine AI on Monday. I feel fairly well-prepared- learned a lot during 3rd year!- but was wondering what advice people have, especially regarding efficient pre-rounding, subjects to read up on, mistakes to avoid, etc. I'll also be doing a peds AI in Sept (I'm planning to do med-peds) so if anyone has medicine or peds advice, I'd love it! thanks