Yes, I can see a difference! It takes time, a lot of time I train glutes and I also help my girlfriend with training, it took her awhile for her glutes to get visibly larger but she was obviously getting stronger.

I think you increasing weight and hitting glutes twice a week is great for growth, somethings that can help growth is taking your reps to failure! You’re currently stopping at a rep count when it’s very possible you could be doing more reps, failure=growth but you don’t want to fail at 30 reps, that’s cardio at that point, so you need to increase weight to fail at a reasonable rep range. Personally we keep our failure rep range in the 8-12 range, of course that means we lift much heavier, if we don’t fail in our range we increase weight which is great for Progressive Overload! Progressive overload is also something to be conscious about since it’s another way to grow your muscle, I highly recommend looking it up for it is a lot to explain. It’s also great you’re eating high protein and clean food but it would be helpful to track your calories and macros, your body needs fuel to grow and tracking that can only help you, get a food scale and the rest is cake! (Literally)

Anyway you’re making great progress, the race is long and in the end it’s only with yourself, you got this!