They told people this ages ago you had a long time to start playing and get to the end of the story quests. You can even skip a ton of optional content there was no reason for you to not have done it already except to save a month of sub. Beating the story up to Heavensward can be done in a couple of days at an average speed if you are skipping cutscenes. As a returning player you even had a head start. It should take you about 1 free Saturday to do it all.