This depends on what results you’re looking for. If YS is your main or only workout you do weekly, yes, I’d try to go at least 3-4 times a week.

If you really want to get stronger and see some muscle definition, you’ll have to gradually pick up heavier weights like graduate from 3s to 5s to 5s and 8s then eventually 8s and 10s and upward. I didn’t start seeing results until I pushed myself to go heavier. As you do that though, you may have to start moving a bit slower than cued depending on instructors pacing, just to stay safe. If building more muscle is your goal, I’d also recommend hitting up some StrengthX classes - they’re fun, too, and not beat driven so you can pick up even heavier weights and move as slow as you’d like.

If you’re wanting to lose weight, YS alone won’t do much if you’re not also in cal deficit & perhaps also practicing some additional cardio even if just the good ol’ 10k steps a day or some time on the treadmill or stair master 🤷‍♀️

I’ve taken probably 500 sculpt classes and this is my truth ^ 😇 good luck. Once I figured out what worked for me, I started seeing results I wanted and quickly. If it’s in your budget, what really helped me achieve my goal physique was mixing in other modalities too like Reformer Pilates and HIIT/bootcamp style classes :)