Any excuse for a "School of Rock" clue. Also if you like the grid, there's more where this came from! https://crosshare.org/tags/onthecalendar (I only do it for months that wouldn't lead to any 2-letter words or unchecked squares in the grid.)
My mom's was January 16, when she was pregnant with me, but I refused to be born for another two weeks and even then had to be dragged out by emergency C-section
9A
Malfunctioned
10A
January-December
Verticali
1D
Hollandaise or chutney
2D
Michelangelo work
3D
Like someone born in January 2023, vis-à-vis someone born in January 2024
4D
"Body Like a Back ___" (Sam Hunt hit)
5D
Part of a ballerina's costume
6D
"___ off! ___ off! ___ off! ___ off!" (chant Dewey Finn gets a bunch of fifth graders singing in "School of Rock" - so no, it's not the word you want it to be)