Yeah check out the TrainerRoad thread on here, lots of reading.
Ive used it for years, for the Velo ride I’d be following the sweetspot base plans…maybe low volume 1 & 2 with some longer outdoor rides at weekends when you can. Also you could put in an easy spin up session between the midweek workouts if you get chance.
12 weeks of base from now will take you into new year, then maybe the 8 week general build plan to take you into March when the weather will be improving…you can then either move on to specificity or spend the next two months working on distance since you’ll have more opportunities.
I’m in a similar position as I’ve missed the last few months through injury, I’m looking to build back up to be in good shape for spring and will follow those plans. They’ve worked very well for me before.