Glad you enjoyed it an liked the game feel. For the 12 coins thing, there is more to the left of the world once you get past the Knight.
You probably missed using the child to dash past them, which may have been very unintiutive my bad.
I completely agree with your feedback, the reason why I implemented a bed time system was due to the issues with my time system. I agree the player should be able to choose to go to bed and get rewarded for that. Yeah the health mechanic was also a bit broken as well.
Thanks for all of the feedback, and thanks for playing, glad you enjoyed it!