Biotin can help too, speaking of supplements - it helped both my hair and nails but it also made me break out (a symptom for some people) so I stopped. Fish oil or flax oil and/or just eating more healthy fats in my diet helps a lot with both my skin and my hair.
I've heard about the silk pillowcase thing, or putting your hair in a satin cap, so that it doesn't get yanked during the night. My hair is long enough that I pineapple it in a satin scrunchie. Avoiding a ton of heat styling or coloring should help too. My routine is not entirely Curly Girl Method friendly anymore, but using it as a guide and avoiding SLS and other harsh surfactants might be something to try. I believe Olaplex is a protein treatment - I use the Hask protein treatment you get in the little packets, if you can't/don't want to invest in the whole Olaplex system.
I remember my mom's hair grew back a completely different texture after she had chemo, and it took a year or so before it was fully filled in. Minoxidil/Rogaine might be something to try to help new growth, too - you could check with your doctor (it's OTC now but in your case they might have a particular recommendation).