Is there a reason why you were using it weekly? Was your hair breaking before you started using it weekly? Wouldn't using it with the relaxer alone be enough?
My hair was damaged from excessive demi permanent coloring and that was why I bought something to help me during times when I color my hair. I probably wouldn't use it so often.
I'm transitioning from texlaxed to natural so I have not had this experience. Sorry I couldn't help more but I believe that just slowing down on it's usage would have been enough. Once a month would have sufficed.
Also did you continue with your regular treatments even while using the Olaplex, ie, protein/moisturizing as needed? You may need to simply stop using it except during your actual relaxer application only.
I used it weekly because I didn't think it would cause harm. I did continue with moisture treatments and protein. My hair became very dry after protein treatment and I used steamer with moisturizing conditioners for 3 weeks. Now the texture is balanced, but I am still experiencing breakage. I stopped using Olaplex completely.
I have about 1 inch of new growth, followed by 3 inches of texlax (from the Olaplex) and then 7 to 8 inches of fully relaxed ends. I believe that the tex lax is causing the breakage. I am considering doing a full Olaplex, touchup with some Olaplex no 1 pulled through to tex lax area. I am scared out of my mind.