I'm applying for Fall 2023 as well (junior this year with a 4.0 GPA). I've had numerous friends get in within the last two/three years with GPAs in and around where yours is!
Here's some advice my professors have given me that I should do over this year/the summer, as I'm not taking a gap (which means you could do that in your gap year):
Take your GRE asap so that if you bomb hard you have a chance to redeem yourself and if you do well, it's out of the way.
Good opportunity to go to archives and get a jumpstart on that.
See if there are any summer institutes relevant to your topic and apply
Start presenting at graduate conferences
I'd also advise you to take a look at the language requirements for specific programs. A lot of them will want German and while I know that you have Italian, it's not a bad thing to take an online first year German class.
My area of specialty is early modern, so I don't know who the great names are in your specialty, but I'll give you some advice as a person who goes to a school with a really strong East Asian Studies program: Don't limit yourself to looking at Art History programs... a lot of times East Asian Studies departments will have several people looking at art historical topics and they won't be cross-listed with the Department of Art History. I'm at a school where that's the case and sometimes there are fellowships and endowments available for grad study that won't be available in an Art History department.