Accept defeat and cut loss by selling the token at 79% loss.
Seriously! To sell at 79% loss? That is not a good advice in my opinion.
Bitcoin is at $30000 and it will likely rise to $100000 and increase more than that. By that time too, Dot would have increase more in price to the extent he will recover some unrealized losses or the investment may later become profitable.
Only traders should accept losses. Investors too can accept losses sometimes, but not like this one.