Also, with hospitals at near capacity, now is not a good time to get injured.
The important thing with ME training is to think of it as “hyper-gravity” training. So anything that increases the leg load without an increase in heart rate is what you’re after. Another thing you could try is making each step a little deeper. Not a full-on lunge, but something like a single-leg half-squat with each step. I think that would increase the training effect.
If you try it, let us know how it goes.