CA suspended registration, moved to PA

Hi, I’m a little overwhelmed and wondering if anyone here can help. Thank you in advance!

3.5 months ago I moved from CA to PA. My car was registered in CA, CA license, reg up to date, all that. I planned to switch everything over to pa after signing a lease here but life is really fun and i got diagnosed with leukemia soon after moving…basically I forgot/couldn't muster the will to deal with DMV shit. I know I should’ve but I didn’t do it! I did get PA insurance though so I didn’t have a lapse in coverage. I renewed my CA registration and license in September Of last year.

anyway I gathered all the forms last week to finally get a PA DL and then I received a notice in the mail today from the CA DMV saying they suspended my registration (I’m assuming my CA insurance company told them my policy lapsed.)

1. I’m assuming that to solve this problem I need to get my PA license, then get my PA registration, pass inspection, then tell California “hi I I moved away” so that they know I’m not in CA anymore and they won’t charge me? Is that right?

2. Will it cause problems registering my car in PA if CA suspended my reg? I know in some states trying to transfer an expired registration takes extra steps but idk about one suspended by CA. I have the title and the car is paid off and in my name.

3. the back of the letter CA sent me saying I need to fill out some form with the date my car left the state. am I going to owe CA money or something when I tell them my car left the state 3 months ago? I’d like to know if I’ll have to pay a bunch of money to soften the blow lol

4. on Friday I have to travel to my parents house a few hours away for chemo and im staying there a week, obviously I want to fix the mess I made here asap because it’s stressing me out but I can’t get a new license and reg and inspection all in the next 3 days. luckily I don’t have to drive my car there, but since my reg is suspended should I not drive the car to the title/tag place when I get back?

sorry for so many questions but I want to make sure I do everything right so I don’t have to drag it out longer!