I’m very progesterone intolerant and I tried drospirenone (the progestin that is in Slynd) in Drovelis. Mood wise it was much better than progesterone, I’m not going to say it was amazing, because it wasn’t, but I can definitely say, I tolerated it and it was good enough to be able to take estrogen. Plus, it suppressed my cycle, which was great, as I don’t have a PMDD diagnosis, but I think I would get one with my symptoms. So, I think you might be able to stop with Prostap once you get suppressed by Slynd, but I’m not entirely sure, do talk to your doctor about this part.
As you can see, I’m speaking in the past tense, that is because I got a bad eczema flare up from drospirenone. It has a diuretic effect and most women don’t have many problems with that, but for me, it caused my dry skin to get even more dry apparently. But, since it is the first progestin I’ve tried that doesn’t cause major mood issues, I switched to dienogest, which is also a 4th generation progestin. Still early days with side effects (drospirenone and dienogest both give me fatigue, but it subsides after a few weeks, where with progesterone it’s a constant), but mood wise I’m thinking it will be ok, because I’m definitely not feeling low, just tired and a headache.