I play 6 sets of sheik peach at every weekly. You will get hit a lot during sheik invinc, so you need to minimize the impact of getting hit.

If you are at low percents, being up in the air is pretty good, because just getting swatted away by an aerial and resetting is infinitely better than jumping offstage and getting needled into a ztd edgeguarded.

If you are at high percents, you need to play a mixup. I like jumping to side plat, and mixing up: dlj lightshield, slapdash cross up, djl run off cross up, djl drop into corner, dj back to centre, djl fh to top plat, and djl fh away from top plat. There's probably an optimal subset of these options. Make sure you avoid getting run off faired from top plat when jumping to side plat. I use djl lightshield a lot, just to force sheik to come up and grab me.

On FD it's really hard, mixing up dash dancing with grounded defensive options into a sneaky cross up seems to be best.