Meet with your lawyer and file for divorce ASAP. He is wishing to separate finances to show/create a history that you are not financially connected. He also may be trying to wait until you have a job to show you aren't financially dependent etc.
You could get royally screwed financially if you don't file now. He's an ass and, you're right, living under the same roof but financially separated is BS. He wants the benefits of certain things but be able to keep what he considers HIS money.
I can't stress enough that this is NOT good and to be PRO-active on moving forward with a divorce. He's already building up to it anyway and, if you file now, you will show how the financial records are now--not to mention to maintain your dignity in the face of this asinine behaviour.