First watering after sowing should come from a spray bottle or a gentle pour around the edge of the cup rather than onto the seed, since a stream can shift it to the surface or bury it deeper. The medium should be damp before the seed goes in, so the aim is to settle it, not to soak the cup. A step by step for pre wetting the mix and misting until emergence is written up on https://kushindicaseeds.com. Once the sprout is up, switch to normal watering by weight.