Less is more when it comes to watering at this stage. 8 days isn’t unheard of for germination depending on how old the seed is, environment, etc. i’d give them up to 14 days. But seriously, to much water at this stage will ruin then, i’ve done it before. I take a spray bottle and spritz the soil about the seed in about a 2-3 inch circle around to the point where its damp 1-2 times daily. Also, pick up some clear plastic cups from the store and poke some holes in them and place it over the seeds location as a dome, early stages they love extra humidity. Do not water again until the top inch of the soil is dry.