Edit- Fixed a few spelling mistake and removed a non existing link)
Can you describe yur Aphantasia think, I may be able to help you with it after knowing how you think without images(Some people in Aphantasia think by experiencing something or knowing something but without a visual element, Source Graduate program . Organisation) but I do not want to know how you think in sounds(Auditorily or Verbally) only what you think in place of images,
It may be possible to develop a temporary synesthesia in which you can hear images,
Anthony Metivier on his YouTube channel has posted a video(s) on how to cure Aphantasia(And he is also a member of the forum by the username @metivier)
I will commennt when I will come to know how you think in place of images so that I can better help you and if you do not think anything in place of images then you can also also comment that and I will comment on how you can improve your memory)
Note- I created a Synesthesia
And the voice in my head with that synesthesia is 30% more accurate than my normal memory and I hope to have this synesthesia upgraded to Multi Sound Revision Synesthesia in which multiple voices repeat the same thing after an interval of a few seconds exactly to that of spaced repetition but in seconds and not in days and with that Synesthesia I hope hear a whatever I read 25 times in 30 seconds with leading to some probability that the paragraph I am reading will be transferred to Long Term Memory after 25 spaced repetitions and maybe this can also be done with the synesthesia in which a person visualizes or sees sounds,
And,
Have a great Day.