It’s a progression so if it’s a bit too much for your nuts right now then you’d probably get more benefit out of other movements or pulling sumo more.
Might look a bit weird but you could try the Frog on your back instead of your belly. This way gravity stretches you out and its a bit gentler than your bodyweight. You can do it anywhere there’s something to lay down on and a wall or other vertical surface to hold your feet against.
Like dis except you have the bottom of your feet on the wall like you are in a sumo stance except lying down nomsayin?
Then you can scoot your butt closer or further from the wall to get at different positions and difficulties, change foot position e.g. base of the wall/touching the floor v up on the wall, toe angle etc. You can apply an extra stretch with your hands or something.
I did these before bed. I’d lay in the bed, scoot down to the bed posts which were the perfect width stance and then fucked about on my phone for a few minutes. Then I moved my butt closer to the bottom. Rinse and repeat.