[ Move to the other side of the bed before sleeping! ] Mod

I hope I'm putting this in the right place (new here, sul sul!). I need help with trying to figure how to begin with this. I already have sims4studio downloaded, but not sure what else I need and what to do, I've only tried to code once and I was following a tutorial on something completely different.

A short story of why I want to create this mod... I've been really irritated with my sims. My couple sims' double bed is against the wall. A gets into the bed, they sleep and they don't move when I try to get B in the bed too. B stands still and waves around saying they can't because A is in there and this infuriates me! They lost a lot of hours of sleep from me trying to force them into bed. Instead of having to rely on the A to move, why can't we just take control of it?

I thought maybe this would be a simple script mod for me to start out with, but I'm not too sure...

What I want to try and make: An interaction for A to scoot toward the wall side of the double bed so B can get in.

Thank you in advance!