You and your wife can only decide when to separate and when to not. Nobody can tell you what to do. Many parents get overprotective of their children. Your in-laws might be worried about their daughter’s future. You can talk to them about this and make them believe that their daughter will always be happy with you. Your job instability will not hamper her happiness. Try to do something that would assure them that you can take care of your wife. Try to communicate well with them. Try to change their mind so that they will drop the idea of separating you both.