For me, I feel the gel (and also lenzetto spray) feels more even than the patch. Every time I changed the patch (I only used it for a little while, because I also got a rash from it), I got nauseous for half a day after changing to a new one. I also got nauseous from oral estrodiol, but from the gel not at all.
I think my dosage is a bit low, but I’m giving it a bit longer at 2 pumps, but it does feel very even in 2 dosages. When I used lenzetto, it also felt very even when I did 2 + 1 spray (3 total divided over 2 dosages), so if you switch over to a similar dosage you are on now, I wouldn’t expect a lot of nausea. Everyone responds different of course, but I’ve read more people feel the patch is a bit uneven and less that say the same about gel.