Hearthpwn

Probably going to need someone to math it out here... since exp required for each level up to 100 is different, it might not be possible with this amount of time left.

But if I were you I would just keep doing the dailies and weeklies on time and try not to miss any value from them. You could also look at playing any decks that you can still get achievements with - there are some that are fairly easy to do it if you have the cards for it.

Check your list and see if you're close to finishing any achievement that gives you exp and focus on that deck/class.

Good luck!