Advice on getting my wife comfortable with longer-term wearing

Hello gentlemen, Here is where I stand in my early days: I have the cage (HT2 model), figured out how to lock it and take it off without trouble (assuming someone has the key, of course), worn it while sleeping several times, and handled it well. The current issue? My wife, bless her heart, keeps saying “just for a few hours.” She is anxious about my erectile function. I shared an excellent Dan Savage piece on this with her and thought that had won the battle, but apparently not quite enough; she agreed to let me wear one. To my knowledge, there aren’t specific medical studies I can cite yet. How did you all persuade your wives that wearing chastity for days or weeks poses no risk? Cheers.