Isn't leveling up getting harder...?

Leveling up to 5 was a breeze. But man, getting to 6 is taking forever... It took me 2 days just to hit 6. At this rate, how long will it take to reach level 10? With 4 days? 3 days? left, hitting level 10 and doing the hidden quests seems impossible, right~? I still have a lot of orders to merge, and I need to merge items to progress the story. And I just found out today that you can get gems? by treating the villagers well with food? 🫠 Ah well, I've given up on the hidden quests~☺☺☺