I am sorry for what you are going through but that is a truly horrible plan. You should not make your son suffer to manipulate your husband. If you have time to drive him back and forth to school (what??) then you have time to earn your own money. Hire the lawyer asap. As a dependent spouse in a long term marriage with a minor child at home you should be able to get enough support to keep you afloat until the divorce is final. Take the advice from @blossom