J.H.
We just moved a few months ago with our 2 year old son. We had a baby two weeks before too, so he was dealing with both issues. He adjusted to sleeping in his new room after just 1 or 2 nights of crying, but it definitely took him a few weeks to be comfortable with his new life and accept that this is home now. It will probably just take some time for your son to accept his new room and his new house, and some patience on your part. Moving is huge for an adult to deal with, and even harder for a child. He probably just needs a little extra support now to help him feel comfortable. It is definitely frustrating, but it will get better!