Retirement tax questions

I have an odd case,  I am only responsible for paying for Undergraduate and this year I paid 100% of the Tuition R&B etc with 529 funds because I have just enough to cover the next (senior) year.    I'm retired and in the 0% Tax bracket but funded 4 years   Spending $4000 of my after tax money to get $2500 or less back didn't seem prudent. being in the 0% tax bracket.  

You advice seems very sound and appears to be accurate but TURBOTAX 2023 is not behaving nor does it allow one to get to the screen "Amount Used to Calculate Education Deduction or Credit"?  Trying to delete forms they pop right back.  The only way I could fix this was to override the $4000 default for the AOC and then the LLC popped up.  I then zeroed out that field but as a retired programmer this is VERY SLOPPY to me.    is there a cleaner way?    Why does TT insist that the default is everyone should get the credit.  Its backwards or at least a rather unfortunate pitfall that will cause people to unknowingly double-dip.