Discover 2 coins in one nap
It helped me to decorate the room with just a few things. This makes it more likely that the items that trigger your sleep are already close together and you don't have to search for long. If two items are further apart, you can easily put them together. What's important now is that with your sleep (press the L3 stick in the PS4 version) you trigger two golden objects at the same time and thus two coins pop up at the same time!
https://store.playstation.com/#!/tid=CUSA0...