My GP swapped me from Oestrogel to Lenzetto in August when I told her my symptoms were returning again - I'd previously increased from 2 to 3 pumps and had added another half pump, at a review I told her I felt I needed a further increase. She told me she'd had other patients complaining about oestrogel so suggested I change to Lenzetto.
I started on 2 sprays but found it not quite enough so increased to 3 after a couple of months. I actually prefer it to oestrogel, it dries far more quickly and is less messy to apply. I've been on 3 sprays since November and feel pretty stable.
I've no idea on my oestrogen levels, I am guided by symptom control (i know lots of women prefer to know their levels)and find Lenzetto better, for me, than Oestrogel.
Give it a go, we're all so different and you might find it suits you like it does me and if it doesn't then at least you can go back to GP, tell them that its not alleviating your symptoms, and request a different oestrogen.