Mini Sumo Squat Help

Hey all! Buying the Tonal has been a game changer for my personal health. 4 months in and I’m in the best shape I’ve been in since high school!

Looking for advice specifically on Mini Sumo Squats. My strength score for my legs is just 726, but I’m easily maxing out single arm Mini Sumo’s at 125 lbs. I just did 22 on a drop set and didn’t drop once. Is there a way to make it two arms or replace with something else?

I’m concerned I’m either doing it wrong or missing out on gains