In this chart, you can see the correlation between BRENT OIL and USDRUB. When you open long position for long period for USDTRY you can open USDRUB short. USDRUB short will pay your swap cost when you get some profit from USDTRY.
In last 20 days, central bank reserves decreased 118 billion to 92 billion. Even in low volume days it didn't push it down. I think it have to break resistance in this week maybe there can be a goodbye kiss to support line :)