As noted, cook is turned off for all seeds so as not to consume them. So I don't know where my seeds are going. I brought over 100 with me from the start. Plots are also rotated seasonally.
Turn off cooking for the food, then they can't cook plump helmets for example. They won't starve, because they can eat them raw. Which gives you seeds. Or they can brew them, which gives you seeds. Just don't let them cook them, or you don't get seeds.
Later on you will have hundreds of seeds, then you let them cook plump helmets again.
Meanwhile, put a Meat and fish and eggs and cheese custom food stockpile right next to your kitchen. Get your butcher to kill a bunch of animals, and your dwarfs will have masterful tallow roasts to eat very soon.