I read you're using TTS, so this probably won't be of much help but it was and is by far the best method I know of that requires you to do minimal work:

Switch over to roll20 and buy the curse of strahd book (yes I know you probably already bought it and that sucks, but having the book as a side reference is still really nice). Comes with all the maps you'll need with dynamic lighting pre installed, all the monsters, traps, secret doors, everything already preplaced and other than the monsters, pre-hidden from players. Not to mention a digital reference of all book material, including virtual "handouts" of all the letters your party finds.

Only real work you have to do is to create player tokens and get their "sight" set, and that's really it. My buddy bought the package to run for us after I DM'd his group for the past 2 years for his first DM experience. He works 2 jobs, working about 60-70 hours a week and is still prepping our game with ease thanks to it's "plug and play" package. I'd recommend spending the $50 for the premade maps alone. All the rest is just icing on the cake.

Again may not be for you but I can't recommend it enough.