Chastity and orgasm denial discussion

Hello everyone, My girlfriend and I are really enjoying our time with my CB-6000 devices, but we face some limitations in our chastity routine since I need to be unlocked for specific activities three or four times each week. Since we don’t share a home, it’s impractical for her to unlock me before those times. Could anyone suggest effective ways to manage this kind of schedule? We typically spend the night together 3-4 nights a week. There are two keys in total for the device. I’ve considered using custom envelopes along with resettable combination locks, but I haven’t quite figured out how it would work yet. Any advice would be greatly appreciated. P.S. Her menstrual cycle is approaching soon, and she wants to keep me locked throughout that period, likely covering Valentine’s Day! hah Best regards!