Day 2 of school – the whiplash is real.
After all the anticipation and preparation for Day 1, you get a few hours of respite, and then you do it all again!
Remember that students are experiencing the same whiplash: nightmares, midnight headaches, tears at bedtime are common from elementary school to college.
Go easy on yourself, but commit to plunging forward as effectively as you can. You will find your rhythm a soon as you let yourself.
Go easy on your students, but start building an expectation for consistency. They will rise to meet your expectations.