Revisited: Be gentle with your toes and massage and stretch your toes especially big one every day.
I was having toe problems until I saw Adam Ondra's climbing video. I realized how I was killing my big toe. Everybody climbs with their favorite digit; big toe. I don't know how long but using big toe is drilled into me. After climbing sessions, my big toes are hurting. So much so I would have hot flash in my feet when nerves get blocked. So I must be doing something wrong. I was looking for a solution because my foot techniques wont' improve with pain.
So back to what Adam does, he looks sloppy. He does not use big toe unless he has to. In fact, he frictions where I would use my bt, big toe. It is interesting to watch his videos just his feet. Fascinating.
So, I did what he does. Use metatasal, that is, use parts of your foot not the first two digits of your toes. How do you do this? With care! Use rest of your foot instead of just the same big toe.