Feel like I have a really good experience to weigh in with here. I had pubertal gyno on both sides since as far back as when I was like 14-15 going through puberty. Only really noticable as puffy nipples when I was warm, my chest fat distribution helped to hide it really well, and if my nipples were hard, was really hard to tell. Anyways, I ran several protocols of Ralox and Nolva over the years, sometimes crashing my E2 along with the SERMs, and other times just using the SERMs. I've ran 120mg of Ralox for 60days followed by 60mg for ~120days and noticed zero significant reduction in size. I would only notice a decrease in stimulation and irritation that I would get to my gyno when I would use ralox or nolva. On top of that first run of Ralox, I've just run 60mg daily for a long time when I had raws, I don't know how long I ran it, but I know that I used over 20grams of ralox raws, taking about 60mg a day with a miligram scale. Took tons of pharma ralox too from expressPCT. Never did anything for the gyno. Ended up getting the surgery about 8 months ago now. Got it for $1800 from a board-certified plastic surgeon in a major city. Both glands removed.
This is what they looked like after having probably 30 grams of ralox and 10+ grams of nolvadex thrown at them(picture attached). Save up for the surgery if you have gyno from puberty and it's noticable or bothersome to you. I got mine for a steal because I went into it really lean. I had zero issues healing, not even any bruising or swelling. I have some scar tissue that still gets a little sensitive, but that's sort of expected with the size of the knockers that he chopped off me. Massaging the scar tissue has it basically non-existent. I've been able to comfortably work check for months, it's just that my chest would be a little extra sore or inflamed after I would work chest for a few months following the surgery. The tissue in the area definitely feels different and weaker for a while post-surgery. I would get the surgery 1000 times. Schedule surgery and get it dealt with if you're serious about getting it removed. I can't tell you how much I wanted ralox to reverse or reduce my gyno, but I'm telling you it didn't work for me.