Scale myself not the whole scene

I’m facing an “issue” when I’m entering into VR mode. It seams that I’m to small and the room is to big.
I would like to scale myself in height so that I dont need to scale the whole scene.
If I do scene.set.size(0.25, 0.25, 0.25) then its look almost ok but when I look down I’m still like one meter from the floor.