When I had mine, I would sweep snow off after every snowstorm not matter how much or how little. It was easy to do since I stored the camper right next to my deck and I could walk onto it as opposed to using the ladder. This allowed me to keep an eye on the roof often and invariably, there was some sort of caulking every spring.
Spring would also have me doing a check of all the caulking on the sides as well.
I once had a leak after doing some plumbing upgrades and it can sure make a mess when pipes are compromised... lesson learned from that was to at least check closely all the plumbing connection in the spring as well.
Batteries were either dismounted and bought in to the garage or leaving the TC plugged into shore power in the winter with proper water level in either case.
Keeping up on inspections was really a means to have little as possible "maintenance." Better to find out early and fix as opposed to being ignorant of it and letting stuff go.