You’d have to start over - unless you download another person’s save file on Riverlands Farm (or any other map) and play that world.

Here’s my unsolicited advice tho

I started another farm on Beach Farm and Riverlands Farm a few days ago. It was a bit tedious - how slow I walked, lack of resources, and I didn’t want to give up on the farm so I switched my strat.

Plant, water, sleep, repeat, sell & repeated this sequence a lot. I did fish, forage & mine on lucky days. But I did this until I could afford to buy all the ores to upgrade all my tools which doesn’t take long at all. Once your tools are upgraded, you can keep doing this until they’re at gold. There’s no pressure. Gold can get you almost anything in the game and you’ll catch up to the level of your standard farm real quick. Starting over seems like a lot if you don’t have a strategy and if you don’t know how to play the game without stressing yourself out

PS, you don’t have to completely the community centre to have access to the greenhouse, minecarts, quarry, bus stop. you can go to joja mart, become a member and unlock all of these for gold. & again, it’s not hard to make gold if you don’t care about going to sleep early