Hello John and Welcome!
Fascinating intro. Most likely you have invited an earful re:tablature vs. reading "standard" notation.
I will start and suggest that you may benefit from giving it another try now that you have increased (even if limited) time. If you taught mathematics, you may surprise yourself with your ability to master any music notation system devised by mankind. With proper coaching, this could happen in a very short time.
As a committed soloist, the advantage of reading music is that you'll have an increased number of scores available to you. Unlimited selection opportunity is a great reward in itself.
As time goes by, you may not wish to remain a solo act and once again find yourself ready to join an ensemble. Being open to learning to read music will broaden your horizons and your opportunities to play with other musicians as you continue your new journey.
Either way, I congratulate you on your retirement and wish you all the best!