I have part of the garden, how do I solve the rest?

I have part of the garden, how do I solve the rest? You stated "You now need to send an adult villager three times to the Crafting Hut so they get one fertilizer per seed. Once fertilized the seeds will start growing, the process takes 2-3 hours each to complete." every time I send a villager to get the seeds, I get an error that the garden is fully planted, if I try to fertilize, the garden is already fertilized. I have already sent a master villager to plant the garden, and I have also used a kid to play in the garden and clean it up. I can now grow rhubarb. But my goal is strawberries, I am wanting to sell them to the boat that occasionally arrives at the bottom right of screen near the docks.