Amending 2020 1040SR.

I am amending our 2020 1040SR that was electronically filed. I am itemizing our deductions 

rather than taking the standard.  Ordinarily I would have sent in copies of my increased Medical expenses, letter from the Doctor attesting to my medical condition, etc.   Is there a way to attach those copies with the electronically filed 1040X? Similarly  to Sched  D?  To avoid the to and froing with the IRS?