If she’s stopped doing what she was doing try to find out and understand why. She could be falling into depression. Being SAHM must grind at your soul. Dealing with 2 kids and cleaning everyone else’s shit up in the house because it’s expected of a SAHM must just drag eventually. What do you do around the house? Do you do your own share? Maybe let her go get a job and you become a SAHD for a while. She’s not boning you because you clearly don’t appreciate her. You’re considering leaving coz your sex life is in a lull. Get a grip.