Help! Got highlights and lost my curls

in Hair Type 3
Back in June I got highlights and my hairdresser used a toner on my thick 3a hair. Since then I've lost the curls on the sides but not the back. My hair now looks dry and damaged with no curls at all.
How can I fix this?
How can I fix this?
0
Comments
RO: IN Harmonic
LI: CJ Beauticurls; Jessicurl (JC) Gelebration Spray
DC: JC Deep Conditioning Treatment; Weleda Rosemary Conditioning Oil
Stylers: JC Confident Coils; IN Volumizing Spray; IN Perfect Hold Hairspray; John Masters Sea Mist; Bumble Bb. Gel; Kenra Firm-Hold Gel; Sevi Blue Yarrow Sea Salt Spray
Low-porosity 2a/b baby-fine hair
I learned the hard way that I absolutely cannot color my hair. My 3a canopy (I was covering silver hairs) became a 2a/b canopy when I got highlights done. The stylist overprocessed my hair and I was devastated.
I grew my hair out for one year and had almost 8 inches of new growth. Then I had to do a big chop. My hair was below BSL and now it doesn't touch my shoulders.
I still have straight bits throughout the canopy from heat damage, but that is recovering. No more blowing out my hair straight either! I had to do it a lot more than I would have liked, but those bits that were fried straight absolutely would not curl any more, so it was either straighten it all or curl the straight bits.
I will just patiently keep cutting the ends until all the heat damaged parts are gone. The good news is that my roots are 3A so I know I have my hair back eventually. It's just gonna be a few years until it's long again.
Good luck to you!