Day Four and Five Slump in Horniness

So, my keyholder and I have been experimenting with chastity intermittently over the past year. We are a professional couple working in law, raising four kids, so life is hectic. We struggled to find a cage that was both comfortable and sturdy because erections kept breaking our 3D-printed cages until we finally found one metal model that works well.. I have mostly relied on the honour system. I have been locked up for five consecutive days now, including nights in it. The first three days were intense; my horniness levels were off the charts. Those initial seventy-two hours I was leaking constantly and could barely think about anything other than my KH (K). I found myself eager to do things for K that I usually sidestep, which includes shared household chores. The cage hasn’t made these tasks too bothersome. Yesterday marked day four. Although I woke up with an erection, the sensation felt different from the previous three days. The cage is comfortable now, but it seems like my intense horniness has faded. Last night K was wonderful to me. We got into bed and without a word she produced the key in her hand and unlocked me. She gave me an incredible blow job, one where you could tell she was enjoying herself and getting wet. The sensation was fantastic; I edged more than ten times before finally losing control. At one point K paused, reclined back, and began pleasuring herself while playing with her breasts (I adore her small perky tits), looking stunning. This made me incredibly aroused. Watching her, my dick throbbed and bounced in response, feeling desperate for that orgasm but also resisting it. She stopped sucking then continued the motion. All I could focus on was how she looked pleasuring herself and just how sexy it was, while my cock sat in her mouth ready to burst. I finally gave way and orgasmed, of course, K ruined the moment as I watched her enjoy herself with cum slowly leaking from my still-twitching dick. Since day four, I have noticed a drop in that same high horniness level compared to the first three days. “Is something wrong?” Who knows. Even after last night’s fun, I woke up today feeling far less horny. Has anyone else experienced this? If so, any thoughts on why my lack of Horniness appears around day 4 and day 5 would be appreciated. Thank you in advance for your replies.