Wash reading 1.060 @ 24 deg C

[Diezel]

This is my ingredience. 6 molasses 2 kg brown sugar 2 kg white sugar 4 Tbsp turbo yeast 12.5 lt water. I now know not to bother with brown sugar and not use turbo yeast. It's been fermenting for 15 days and my reading is 1. 060 and I didn't take a start reading. What could I change? Or should I leave it longer? Thank. I hope I'm posting in the right section if not im sorry.