My sex life died

We co sleep cuz it's so much easier while breast feeding. Well our sex life has basically died. It's been 12 almost 13 months now and I'm ready for our baby to be put in his own room but my bf doesnt seem ready or interested. I tell him about my concerns and he still seems to not care. I just want my son in his own room so we can have a sliver of hope that this relationship is going to work.

Any tips on how to get my titty baby in his room comfortably and without crying it out?