If you've had two better days then I would definitely be tempted to stick with what you're on for now and try to stabilise. I really do think if you are super sensitive to changes like we are that slow is the only way to go, as frustrating as it is.
It became too high because i started my HRT on too high a dose (2 sprays). I was mistakenly under the belief that I needed it primarily because I was still having so many problems before starting HRT on Zoely contraceptive which is roughly the equivalent Estrogen dose of 1 spray of Lenzetto. I sort of put myself on HRT because i was getting zero help from doctors and only retrospectively had my blood test results confirmed as low enough to start HRT by a meno specialist. So I guessed the dose of 2 sprays!
My symptoms of too high have primarily been extreme weight gain (1.5 stone very rapidly after starting Lenzetto) very chronic constipation during the luteal phase (I'm still having periods) and anxiety, jitters and a general wired feeling around ovulation when my E hit its peak.
I'm reducing by a tiny amount every month (by taping over my Lenzetto dispenser a tiny bit more each month) and timing it with when my own E is not at its lowest, in order to minimize side effects. Sometimes it's gone ok, sometimes I've pushed it to much and got side effects and needed to go back up a bit. I realise it probably sounds mad to most people, but I know through my own trial and error that it is 100% the act of reducing that causes the issues, it's not that I'm lowering it to "too low" a dose. I have a theory that it's because Estrogen is so tightly connected to serotonin and some people are more sensitive than others to changes to that, but there is very little information out there, except for some studies that were done on ladies with Estrogen implants that experienced what I go through...