Hey girl! Hormones are a tricky business... While I've been on HRT for a lot less time ( almost at the 6 month point ), they've been giving me grief too. Hormones are certainly not one-size-fits-all, and you know that YMMV. In my case, spiro has stopped working entirely. So there's heaps of E in my system, but a huge amount to T too which dominates, and makes spiro ineffective. So I've just been swapped to Androcur instead. Early indications are good, but will have to wait a couple of months to see what my body does with it long term.
Have a chat with your endo. If your levels are out of whack, there may be other options.