Questions about Home of Record move?

Hi, My husband is being discharged for PRT failure, and we are told that he is going to have only a ten day notice before we know the exact date of his separation. We would like to go ahead and move me and our things home ourselves while he stays here to finish up. However, I am confused about when we can move. Do we have to wait for his orders to move to be reimbursed for moving costs? Can I move now and then submit all the papers to get refunded after his orders come? Also who is in charge of this stuff, would it be legal or PSD? Thanks for any answers, I hate all this stuff up in the air!!!