I made these “fret savers” for all my guitars years ago. I wipe down the strings after playing, but I have corrosive sweat (TMI). It’s a piece of grade school art board and a piece of foam rubber to keep it snug under the strings.
You did great! I too have a high amount of acid in my system. I will never remember to do that. I take an Alka Seltzer each evening or two. My strings and the paint on my guitars holds up better and my headache and half sick stomach calms down from my nutty job.