Give him all the money you can afford to give him to pay room-and-board in the homes of friends while he looks for a job. Invite him for Sunday lunch, but no other meals. Give him a suitcase, his favourite cup, etc., and try to make his 'journey into manhood' as pleasant as possible while still getting him out. Make it clear there is no more money. He must get work. Get his key or change the lock. That should give you both a break.