I doubt that your child is sitting at a desk with you standing in front of him for five hours a day lecturing. If so, you’ve just recreated institutionalized schooling at home. I don’t believe that that is what you are doing, even though you may be interacting with your child several hours a day.
And, for some children this may be the way in which they learn best, albeit on a smaller scale. It’s part of the continuum that is home schooling even if it is only a very small minority. IMHO those new to hs’ing need to keep all options open until they figure out what works for their family.