Delta will give you no information while in the pool. The information from here comes from people who spill the beans on their interview class, the drop once they're in class, when they get the call for class, etc.

Looks like you're about #350 in the pool. If they keep OTS classes to 30-40 month (unlikely) you'll be about 10 months. If they go back up to 60+ OTS, you're looking at about 6 months. Keep your life jacket it on and don't look back to the shore.