There are three possible scenarios.
A) Stays above the support line, which is the Las big resistance (since the big drop). B) Goes down into the trendlines , and we consider the last day as just a big movement. C) It starts the end of the month drop.
Either way, the best scenario is to buy around 2800 because all three scenarios are a part of it. If the option is A) you won´t buy, but, at least you´ll know the resistance stays at 2905.