I’m in the same boat, just one of those who bleeds on HRT. I was on 25/28 Utrogestan, with Evorel 50 patches, but was bleeding every 2 weeks. I tried resetting to mimic my own cycle, even though I’m now 58 and haven’t had a natural period for at least 2.5 years. I know this as I took a 2.5 year break from late 2019 to mid 2022 and didn’t bleed at all.
So, I switched to continuous utro, 100mg orally at night, and now getting bleeds every 3 weeks, although lighter. Having cervical screening in 10 days, and possible investigations, but hopefully if all is well, I’m goi g to go back on a sequential regime. At least then I will know when a bleed is likely to happen.