When William had the lump removed in his groin area I bought some 18-24 month baby sleepsuits from Sainsbury's for him. The legs and arms needed a bit of scissoring to get them the right length. He wore the sleepsuit with the poppers along his back, so back to front basically. I left it on him at night and if I was out, had to take it off when he needed a pee of course! But it worked really well and didn't irritate his wound. Might be worth a try for Jazz?