Alternative to crib that would fit in our bedroom?

Alexa • Micah Tyler born 08/31/17 💙
My son is almost 4 months and is quickly outgrowing his sleeper that is next to my bed. He's a big baby. He has his own bedroom with a nice crib but I'm not ready to stop room sharing honestly. I love having him next to me and I'm worried I'll never sleep if I start transitioning him to his room. What's an alternative for a bigger baby? A pack and play?