Hairdressers are always so quick to suggest cutting all the hair off and starting from scratch in cases of breakage. In my humble opinion, this should be the last option unless all else fails. If you use heat, do roller sets to minimize heat damage. Cut out the use of flat irons until you get the situation under control. Try doing some protein treatments followed by a good moisturizer. Put your hair into stress-free styles like a bun (if you can), a braid-out, or a french roll. Trim the damaged hair gradually. Treat your hair to some good ol' TLC. If you don't already, take some B-5, aka pantothenic acid, which has really helped thicken the tresses of some women here with great hair. Hopefully, the stressful situation has passed, or will be passing soon. A stylist told me once that hairdressers who advocate cutting all the hair off because of damage are too lazy to deal with the problem and help you restore your hair. I don't know if this applies to your stylist, but it's a point of view.
Starting from scratch should be your last resort, girl. Don't let you stylist talk you into it if you don't want to go this route, and I don't think you should.