After you file

I forgot to file my 1098-T in both 2018 and 2019 and I did not take the AOTC either year.   I was working on an amended return and it said I had a taxable event in 2018 of $1532 ("based on the educational expenses you entered, the student beneficiary must report $1532 of taxable income from this distribution") and  2019 of $8721 ("based on the educational expenses you entered, the student beneficiary must report $8721 of taxable income from this distribution").  It looks like I will receive a $2500 refund both years but I will have to file an amended return for my son in both years (he did not pay any taxes in either year...2018 - $2 dividend income only and 2019 - $1271 AGI).  Because of his low income, will there be a penalty for filing an amended return for him, and would it be worth it to file amended returns for me and get the $2500 refund each year?  Additionally, all payments from the 529 plan were made directly to the University for tuition related expenses.  Thank you for your help