I do exactly what I've been doing. I just added oloplex and switched to a line specifically for damaged hair. Honestly I bleached heat damaged hair, it should be straw right now breaking off 24/7 and it feels the exact same way it did before I bleached. Oloplex is the TRUTH. Hopefully it's consistent in saving my hair!
You should get the high lights though. Life's too short not to do what you want, especially something as small as high lights!!