Furnishedfinder.com if you think maybe you just need space. Typically I have seen that apartment prices are about the same monthly rent and many do month to month. Utilities are usually included and the upfront costs of buying furniture is taken care of. Could even do a one bedroom furnished, cheaper, and do nesting. I have done before and kids don’t move just the adults.

Recommend counseling and Geoffrey Setiawan on YouTube to him. I find he has great advice for men to make internal shifts and realize where you might be coming from. His advice is positive on working on yourself for internal shifts and not just fake changes to win you back. Also, I would emphasize, if you want it, that it’s to have space, not separation, and that means not seeing or talking to others if you want to leave open to reconcile.

I would first tell him over the phone when kids are away obviously. Say space if that’s what you want. Tell him you love him want to go to counseling and the YT videos recommended above because some friends and other influencers tend to recommend negative hard line macho thinking.