The answer to 'how to maintain seeding' is to properly care for and monitor your newly seeded lawn. This includes regularly watering, mowing, and controlling weeds to ensure the grass establishes a strong, healthy root system.
Begin by keeping the soil consistently moist, watering lightly 2-3 times per day until the grass reaches 2-3 inches tall. Then, transition to deeper, less frequent waterings. Mow the lawn when it reaches 3-4 inches high, cutting no more than 1/3 of the blade height. Be sure to remove any weeds that appear, as they can compete with the new grass for nutrients and water.