How do you adjust (IRA/SEP/SIMPLE) 1099-R box 2a (2b has X) to show impact of qualified distributions(over 70.5 years age) which are ~53% of gross dist.?

I have a SEP/SIMPLE IRA. It shows gross distributions of $X. Box 2a shows the same amount. Box 2b has an "X" in it because about 53% of Box 1 amount are actually "Qualified Distributions" that I'm allowed to make to non-profit organizations as I am over 70.5 years of age. These distributions did not come to me and I should not have to pay tax on them. What forms do I additionally need to make this correction?