If you have already crafted the 4 Sparkling Diamonds and 4 Glittering Wands, Chapter 10 could take you 6 hours. That is how long it takes to make the Golden Elixir if you have amassed 10 Golden Horns and 10 Faerie Biscuits (which should now be no problem). You also need 10 Golden Milk for the Enchanted Coins. If you have these items, Chapter 10 only takes 6 hours. Best of luck!