You have probably relaxed by now, but to answer your question anyway; I relax every 12-16 weeks. But mostly I try to listen to what my hair needs at the time. Because breakage is not better than the principle of stretching.
Also I texlax, I have heard alot of rave reviews on ORS and all I really do to texlax is add oil, 1 tbsp of either coconut or olive or both and 1/2 oz of Chi Silk infusion. I get good texlax results using this method.