SOS - I need a miracle! Sleep problems ☹️

My son is five months and has only ever coslept despite trying to change that OFTEN. We've tried cribs, pack n play, even swings, sidecarred cribs, halo bassinet, and rock n play. He has one of those weighted wearable blankets too. NOTHING WORKS. For the sake of my sanity and relationship (sleeping in separate beds for five months 😟) we need a change. Plus, there's the obvious risks of cosleeping I'm afraid of. Cry it out just isn't an option for me, I can't handle hearing him cry and we live in a thin walled apartment. Please help me! ANY suggestions ... I'm open to hearing it all!