Seedling leaf growth of concern ?

Seedlings are very sensitive, And here is the sentence " less is more" important. Kepp agood distance from the light, to near and you bavies are burnt only 20 ml water per day for the lil ones---- more makes them drowing and leads lo alot of issues Feeding…. no feeding at all, if they have grown out their pots, give them bigger ones, the growingpots Keep lots of nutrients inside. So watch out and Keep the Little ones safe

I see that your diary says that this is an outdoor grow, but the curling leaves look like a light intensity problem to me. Do you have them under led or hid light? If so I think they are getting too much light. I start my seedlings under low wattage cfl. They don't need much light at this stage.

it is normal after a seedling to slow down for a few days. It is not a concern if you allow the substrate to dry well between each irrigation, do not soak the substrate too much. the roots need oxygen in this first phase to develop well. good luck mate 👍