DLR extension

Hello

I applied to extend my DLR for the first time a month before the VISA expired. That was on the 12th of November 2015. I got the acknowledgment letter after a month. I havent had from them again after that. How long approximately do I have to wait for. I paid £649 plus £500 IHS surcharge. Please help someone! Will appreciate.

I finally got it.
It took 5 and a half months.

I thank God.