I just read through this whole thread, and I find it interesting that nobody has even considered the ‘body dysmorphia’ possibility. We’re all assuming that his glutes are out of proportion without verification. Whereas, on basically every other body part, we expect pictures, and often it turns out the person asking the question is quite proportional and doesn’t realize it. Just a little surprised by this.
A second consideration is posture/hip tilt. I’ve seen a lot of people, men and women, whose hip tilt makes their glutes APPEAR larger/stronger/more pronounced than they actually are. I think this could also be contributing to the impression the OP has that his glutes are overdeveloped.
I have RARELY seen individuals who truly have overdeveloped glutes compared to the rest of their lower body. It almost never happens. I have, however, seen plenty of people who THINK this is the case. So, I’m skeptical to say the least.
Regardless, I think my advice would be the same:
I’ve been squatting for many, many years, and over that time, my overall shape and proportions have indeed changed. Sometimes, I’ve felt like my hamstrings are my stronger point. Sometimes my quads. I think that what happens, over a long period of time, is that your body will likely go through phases of compensation/development. If a particular body part is growing faster than the rest of the muscles in the chain, eventually that stops, and the other muscles will grow to compensate. In other words, even if it is the case, currently, that your glutes are overpowering the movement, they won’t do it forever. Eventually, the rest of your body will catch up, and proportionate development will occur, especially as the weights get heavier and you become more proficient in the movement. Right now, you’re squatting pretty light weights, so it’s hard for me to believe that anything is truly overdeveloped, as compared to where you’d eventually want to be.
just my 2 cents.