This probably won't help you, but I'm pretty inconsistent when it comes to PT or DT's. I was doing them about once every 7-10 days and my hair loved it but somewhere along the way I got busy, distracted, lazy....and now just do them when I think about it. I kinda go according to how my hair feels.

When im consistent, I like to do atleast a DT once a week and a protein maybe every 10 days. I do use products and conditioners with protein so don't do PT's that often. This reminds me I need to purchase some CJ Repair me, I've heard great things about it. Sometimes instead of a DT I do a heavy oiling with either coconut oil or EVOO. I slather my hair and let it sit for about an hour and then wash as normal. My hair loves it!