My villagers are running low on food. They're down to 3oo berries and my farmer villagers are at Adept famers. How long dose it take them to become able to fish? Also, the villagers keep on randomly watering an area of the island. Plus, how do I get the builders to improv from adept builders once they have made the huts and cleared away the debris??

you have to purchase the appropriate tech for the villagers to fish...but first they have to farm

there are still puzzles that builders can solve for you to improve their skill, but they will also continue to increase it by fixing the huts (regardless of the fact that there is no damage)