A 5 year old wrestling 5 days a week. Yes, you will burn him out no matter how much he loves it. Just my opinion, but just a few more years could make a big difference. I believe you need to hold them back and portion the amount of wrestling until they are 7 or 8. They will still be just as advanced by the time they are 9-10 as the kids that go full bore at 5-6. And you have less chance for burn out.
It's a long time until high school. Again just my opinion and it is your child. Each child is different.
24/7