Break the lease on your rental, or have yourself taken off the current lease, then rent a place of your own. If he can’t afford to keep up the rent then, we’ll...that’s his problem. In the meantime, you can sell some furniture etc and put that towards a deposit on your new rental. Start small: Even if it’s a 1 bed apartment where your daughter gets the bedroom and you sleep on a pull-out sofa bed in the lounge-It’s still a start :)

Or....don’t pay the rent where you are currently and deliberately get ‘kicked out.’ He sure would have to move out then! The only draw-back being if that might affect your credit rating if you default on payments?