I used the same non-stick gauze but I was going through it pretty quickly so I ordered this brand and I didn’t notice any difference. It has 100 per box: https://www.amazon.com/gp/product/B07WPW1CNF

I got these 3x8 non-stick pads for the incision underneath and they stay in place better than the shorter ones, I fold them lengthwise and put them under my breasts. There are 50 in a a box: https://www.amazon.com/gp/product/B07MZBR32X

I have the same shower chair, it works well and isn’t expensive.