Last night we had the girls together for the first time in their room. We finally raised the mattress up on the crib for Ali - therefore - Andie has to sleep on the trundle. They did great. Andie slept the whole night (once we got her to sleep!) and Ali only woke up twice, but didn't wake Andie. So, it should work out. We got new bedding for the crib - It looks really cute!