Sometimes you just have to suck it up-------------
Mine is the same way and it takes both of us HRH ( her royal highness) to make the bed up. First you have to slide the mattress down away from the head board as much as you can, pick up one side of the mattress at a time to tuck the sheet under. Trying to change sheets almost starts WW III around our camper. But in the end it is manageable. Just try what I have suggested. When you are finished (making up the bed) slide the mattress back against the head board. It will work, I know for we do it this way every time.
And by the way, the factory comforter was the first thing to go!!!!!!! DUH, cheap!
In the summer we use a light summer cotton blanket that we put on the bed right up to the his & hers closet, then fold it back down. In the winter we use a blanket on the bed the same way, only up to the closets.
Sid, Lois & HRH MISSY Terrible 2s SHIH TZU
2011 ROCKWOOD 8285 WS
2014 F-250 KING RANCH PS/SD/6R140/BFT
BOLIY PRO 3600SI GEN
DAYS CAMPED 2016 57 DAYS