Giving up our bedroom

Mr

We live in a small 2 bedroom apartment. Up until yesterday, our Lo was sleeping in our room. Our 4.5 year old has the second room. It’s a small bedroom, maybe considered an office? It can fit a bed, she has a bunk bed, a dresser, and our daughters Barbie dream house. We moved LO into there and there’s no room!! Only enough room to walk through but pretty much every inch has something in it. So we have thought about giving our girls the master bedroom. It will give both of them enough space and room for all the toys. But we can only fit our bed in the second bedroom and maybe one dresser.

The only other thing I can think of is getting extra long rails for the bottom bunk and turning that into her bed? Would that work?