Ohh. You must use some codes too skip days for expantion. I just courious at first how long it's take too have 100% expansion in both farm without AR.
It will take some time.
I'm at the end of Year 6: Bluebell 100%, the tunnel is finished, I have both bed upgrades and the house expansion. I also got the hotspring and both mines. In Konohana I only have 2 field expansions up to now, so I will have Konohana at 100% at the beginning of Year 9.
But you can get 100% earlier in the game, because I got the hotsping and the mines (3 seasons).
So you can the get both farms at 100% in Year 8.
I'm not sure about the house and the sec. bed upgrade. And I don't know if it is possible to ignore the tunnel upgrades by skipping the cooking festivals all the time.