You have pheasants? Make awesome meals out of 'em. Should keep dwarves fed and happy.
Alternatively, farm fast and/or high yield stuff (nothing you can't eat like pig tails), butcher anything you can get your hands on and gather plants from the surface, and make stuff you can trade away to merchants for food when they come. Hunting is good too, and fast, but not reliable depending on the quality of your units available for hunting, and the wild game available.
If you survive, try to build up a large reserve of consumables, and then cook and brew to maintain it, not to replace it after you let it get consumed. Something like 10 booze per dwarf and half that many prepared meals is okay, but more won't hurt. Having a big buffer between you and starvation is good, it helps you deal with surprises like giant migrant waves, or having to bisect your fortress because a forgotten beast got in and the only way to stop it is to build a wall where you really don't want one. If you really wind up with too much, you can always trade away they excess to help pay for your imports.
I don't know what size your farm plot is, but it sounds like it needs to be bigger, and/or there needs to be more of them. I've tried six 3x9 plots (three subterranean, three surface) a few times and that turned out to be excessive, that much farm can easily keep a fortress of 200+ dwarves drowning in booze, and of a wide variety to keep away the same old booze bad thoughts. If you can get them, try to grow some wild strawberries. Like plump helmets they can be cooked, brewed, or even eaten raw, so they can help avoid starvation, and they provide some variety in booze when you're not eating them.
If you can get them, have some large birds around, and build nest boxes for them. You only need females for egg production if you're just going to eat them, and egg production can go a long way to meeting a fortress' food needs, but if you get a male of the same species and stop the eggs from being collected so they stay in the nest box with the female on them, some may hatch. It doesn't take too long to go from one blue peacock and four blue peahens to 20 blue peahens, lots of eggs to cook, and a cage full of spare birds waiting to be disassembled for meat, bones and leather.