Then I'd be using a spray bottle to keep that top a little more moist. Because from what's visible the top is bone dry. Maybe adding a bit more perlite would help? So it dries a bit more evenly. Did you start the seedling in that pot or in small cells like in a flat? If you started in a flat most roots are in that small space until more roots develope. So for the first week you need to remember that that small rootball will dry out and the rest of the soil will remain wet until the roots reach it.
