After 2-3 days, increase to 2 Tablespoons ground flax a day. Continue this to the goal of 2-4 Tablespoons ground flaxseed a day. -Recommendations from professionals vary from 2-4 Tablespoons of ground flax seed. I know many people who eat regularly 2-4 Tablespoons of ground flax daily.rink 8 cups of fluids (preferably water) a day. After 2-3 days, increase to 1 teaspoon of ground flax a day. Continue this to the goal of 2 teaspoons ground flaxseed daily. (~greater than 6y/o or 50-100 pounds; if greater than 100lbs work up to adult dose). Start with 1 teaspoon of ground flax seed a day.