I switched from patches and gel to implant. I'd expect that's similar in principal.
Do you have your blood levels before and after switching? Mine were low to start, and tripled. A few days after the implant I got euphoria from the estrogen. That was awesome. My breasts started hurting again after a long time of not. That was even better.
My endo tells me some people don't absorb well from patches and I must have been one of them. Longer term I've had more changes, but I was on low dose HRT before and now I'm not.
I believe keeping track of blood levels is critical. Some methods work better than others, and are different for different people. The best way of finding out what works is measuring it. Its also safer.