I totallyyyyy recommend the Dental Mastery app! It made studying a lot more tolerable and I had a handful of repeated questions straight out of the app, you're basically answering previous exam questions while studying
I couldn't handle the Dental Decks, it was way too much information for me since I had around 4 weeks of study time like you.
I also got the Pass the Dental Boards videos, used those for micro and dental anatomy, helped me LOADS, micro was my weakest area and only used his videos for it!
But that's just me and I passed!
(I'm selling both if you're interested!)