Is your toddler/kid grown up That came when you first made your account? If so, put Him on the research and then the food. I say you get the Harvest first your berry bush cant last. but it takes 29 minutes for the crops to grow.

Hint take a person change his skill to heeling and then put him on the cactus and it takes a few tries and he will try to study it within time he will become a docter it takes some time for him to become master