To some extent we can predict if bitcoin is going to recover before before December this year but I doubt if ethereum and some of it tokens will recover before December. Before December lasy year, when bitcoin is getting pump ethereum will also be getting pump but I see bitcoin going up now and ethereum is getting dumping.
It might be possible, the price of Ethereum finally increase though on the last 2 days and it's a good sign, I hope the price of Ethereum can back to $300 again but it needs time. I think the momentum is on bitcoin right now, if the price of bitcoin can increase on these last 4 months, i'm sure Ethereum and other alts will go up too.