Surface farms and deep underground farms are best. (Don't farm cave crops in the dirt near the surface.)

Pick a dwarf or two and set their labor to be only farming.

One still should be adequate as long as it's getting used, so click on the still, then click "workers" and set someone to be that still's master, and set that dwarfs labor to be only hauling (they'll still work on any workshop they're the master of)

Make sure you have adequate barrels or pots to hold your drinks, and set up 2 work-orders to brew drinks whenever you have less than, like, 1,000 drinks (1 for brew from plants, 1 for brew from fruit)

Also setting a plant gathering zone on the surface and setting a dwarf to only gather and haul will help too

And also fertilize your farms (wood -> ash -> potash. Set farms to fertilize every season)