While it is doable. You might wanna just consider getting the cheapest plan you can find for your Xs. Saves a lot of hassle WRT passwords, OTPs and all that. I'm not sure if msgs and other such things will sync.

You can also consider getting those ziplock bags to store your 14 and a bumper case with air pockets on the sides to cushion the fall if you ever drop it. I used to rely on cheap cases until my friend got one of those armour cases and he dropped his phone down 3 flights of stairs and it didn't get a single scratch.