Chastity and orgasm denial discussion

I suspect most of the men here won’t feel much sympathy for this, but sex is becoming quite a challenge right now. Before we shifted our orgasm denial from days and weeks into months-long stretches, my goddess and I would enjoy full penetrative intercourse several times weekly, sometimes even multiple times in one day. Now that I’m perpetually aroused, the frequency has dropped to roughly twice daily. We both love being so desperately attracted to each other like teenagers; she mentioned this weekend that her orgasms are more regular than ever and her sex quality is at its peak. She’s grown very confident in asserting dominance over me and enjoys knowing I’m constantly eager for release. The situation is lovely, but with only 9 days done out of a total of 64, maintaining intercourse beyond five to ten minutes feels nearly impossible. Even the lightest contact threatens to trigger my ejaculation point. Naturally, there’s ample foreplay and occasionally oral stimulation before we begin penetration. During our longest denial period this year so far, I leaked several times and had one near-miss towards the end which helped alleviate pressure, but now she insists nothing escapes. I keep warning her that leakage is inevitable, but she reminds me it belongs to her and wants it retained within her testicles. I told her if she desires a hard pounding, I’ll need to take action. Numbing gel came to mind, though I’m unsure if it’s ideal since the sensation might transfer to her as well. I proposed using a strap-on device, but she prefers feeling my own penis inside her because she loves knowing her influence is what makes me so tight and hard. The same logic applies to dildos. So how would you manage to retain everything for such an extended period under these conditions?