Gaming is out of control and my wife won't help me put my foot down

12 year old is playing Fortnite literally every second he's not at school. I said no gaming on school nights and he just sneaks it on his iPad. Wife thinks I'm being too strict and says all the kids play games now. So now he's learned he can go around my rules through her. It's causing fights between us and I feel like he's winning. Anyone else dealing with a spouse who won't back you up on screen time limits?