I can pretty much guarantee you are spotting now due to LOW estrogen.
Lenzetto is an *incredibly* low dose form of HRT, to the point that it's not practical for most women because they just can't absorb enough from it. Moreover if you are only on ONE pump of it, you're getting hardly anything.
A huge cause of spotting is low estrogen, it's not all about high estrogen...
I can guarantee also that the ridiculously high E result was due to contamination because you should NOT BE USING finger prick tests if you are on HRT. Most of the online places that offer them now state that explicitly. They are not reliable and you WILL get a contaminated result back, which leads to this. If you want to do home tests, look at the Randox Tasso test which attaches to the top of your arm/shoulder (as long as that is not where you put the Lenzetto). Be sure as well, if you do a venous test, to stay well away from putting it in the fold of your arm where that blood is taken as well.... (You may want to use only one arm for a few weeks before a retest in terms of the application site.)
I would increase your Lenzetto back to the 2 sprays you were on previously and get your levels re-checked. Really, you should be on 270pmol+ for the bare minumum benefits of estrogen on bone density but really most women do best between 350-650pmol. It's incredibly unlikely you are anywhere near that on one pump of Lenzetto.