Hello! We started pumping about 2 weeks ago. The only place we have put his site is on the upper portion of his bum. He is really of the out of site, out of mind mentality with his site, but I am not wanting to overuse a site location and there is just so much realestate on a skinny three year old's rear. I am curious where other parents place the sites and how your child handles it in that location? Thanks!