If you're out of rested bonus, wouldn't lengthening the day/night exacerbate that?

Wood is in very short supply in Mistlands, but fortunately there are many places you can make a quick temporary camp. Skulls and even rib cages provide shelter, as do the large helmets. Just drop a fire and a bed, and you're good.

The easiest way I've found to make a quick shelter if you're not near one of those is just to punch a hole in the closest rock. Make it deep enough for a bed and flatten the bottom with the hoe. Make it a bit deeper if it's raining to put the fire in the entrance, or just put it outside if it's not raining.

The rest of the biomes are really not a problem. It takes 5 rock and less than 40 wood to make a camp.