Now would be the time to evaluate your progress and consider whether or not you need to change the scope of the game to finish it in time. Technically, you should have a fully playable prototype by this date and should only be polishing and playtesting. If you're not at that stage then you should consider reducing the game's scope. If you're not at playable prototype today then try to get there by June 3rd at the latest. That will give you time to playtest, fix bugs, and polish things.
Also, if you haven't tried to build a stand-alone executable yet, you should do that right away. Some assets have issues when building stand-alone and you may not be able to make one that works without fixes.