Male Chastity Now discussion

I’ve been experimenting with chastity for roughly a year. My wife has decided to switch me to full-time wear, starting with longer lock periods of seven days. My main issue is that I can’t last through the night and end up removing my device (a Holy Trainer V2 small). During the day it works perfectly; it shifts down slightly but stays put. I’ve tried other ball-trap devices without success. I really want to get this right because I’m eager to please her. Any advice on what adjustments or changes would help make this work?