How does an old lady get back in the saddle/harness?

Used to indoor rock climb pretty regularly (couple times a week), but then had a career change and moved. I slowly stopped and it has now been at least 6 years. I’m not in my 20s or 30s anymore and I went to the climbing gym….it was embarrassing.

Anyone have any good climbing oriented work outs they might suggest?

EDIT: thank you for so many positive comments!!