I understand that you may not be able to limit your personal finances and need a prepaid card, I was unable to when in action which was one of the things that made my recovery so difficult and prolonged.
I am concerned at the idea of a controlled relapse – which sounds to me as if you are already planning for this. You say it will not hurt you too much … I know how devastated I was when I relapsed – even when it was for a small amount because I felt I had let myself down. At the end of the day, you will do what you will do – and all I can do is voice my concerns. Just think about it. I wish you well.