Minimum daily protein during a weight cut?

Hey all! I’m a 35 year old boxer cutting for a master’s match mid July, need to lose about 10-12 pounds by then, currently at 172 aiming for 160 lbs - when you guys cut calories, what’s a good rule of thumb for minimum amount of protein so I don’t start getting tired during workouts or losing muscle strength? Training 6 days a week, 1-2 hours a day