I had overdeployed systems myself, this is how I fixed it, may help in your case.
First, make sure all the licenses are accounted for. I found 100 licenses in another employees License Portal. I also edited the database properties under Admin/Servers and told it to delete clients that haven't been in contact for the past day. Doing those things, I went from 180 over capacity to 150 under, and took the delete setting back up. Right now I'm sitting at about 120 under.