We Need a 4th Bedroom

We've move Joey out of his crib and put a toddler bed in Jacob's room. So now Jacob and Joey are sharing the same room. The idea was that Joey would sleep in the toddler bed, but it's not working out this way. Joey usually would climb into Jacob's bed. After kicking Jacob a few times, Jacob would move into the toddler bed and they would sleep through the night with this arrangement. Well, last night, Jacob woke up around 1:00 a.m. to use the bathroom. When he came back to bed, he got into his own bed instead of the toddler bed. That woke Joey up and Joey had a fit. He started screaming, this is my bed, I was in it first. I don't want Jacob in my bed. Jacob was so tired, he slept through the screams. But Joey was so upset, we had to move him to our room, and even in our room, he was still crying, it's my bed. I was there first.