What about using the Optional rules of resting from the DMG? I'm wanting for some time now to run a hexcrawl in 5e, but resting, and the way power are replenished in 5e kind of goes on the oposite direction of that, so I'm thinking of using 8 hours as a short rest and a week as a longe rest, or 8 hours for a short rest and ruling that you can't have a long, replenishing rest, while in the road (or in this case, in the jungle), you would have to find some reasonable resting spot to replenish all of your resources. What's your toughs on that?