To be frank, this isn't going to be useful and rather it might create confusion among the candidates.
The posts in forums get around 1000 views. That's under 5% of the students registered for the course. Even if try different channels, I don't think you'll be able to get even 25% of the data. With that sample, the estimate might be far from reality. Why give false hope or confusion among candidates. Just wait 3 more days.