The Night Before: In a large bowl, mix the active sourdough starter, honey, and milk together. Add the 2 cups of flour and mix until all flour is absorbed. Cover and let rise overnight, 8-12 hours.
The Next Morning: Sprinkle the baking soda and salt on top of the dough. Gently lift each side of the dough to incorporate, then transfer to a clean surface with the remaining 1/2 cup flour. Gently knead just until the dough is soft and pliable. It's okay if it doesn't absorb all the flour.
Roll out the dough to 1/2' thick. Use a 3-4" cookie cutter to make individual english muffins.
Sprinkle cornmeal on a baking pan. If the english muffins are dry on the outside, brush lightly with water on both sides then place on the baking pan and sprinkle more cornmeal on top. Cover and let rise 1-2 hours, until super fluffy and doubled in volume.
Preheat oven to 350F. .
Heat up a griddle over medium high heat. Cook the english muffins for 2-3 minutes on each side, until deeply golden. Place back onto the baking pan.
Bake for 8-12 minutes, until firm when you touch the center.