Too young to know yet pal.
By wk 3 onwards you'll know if its gonna be a runt.
Sub might be a bit hot.
Also, pour away from the roots. Don't drown the sub around the stem. This promotes root growth throughout the pot. As the moisture is sucked towards the root, so the root is to water. Promoting good growth on top
At this stage of growth. High RH and moist soil. Not wet and nutes only if in coco or water after a day or so. Enzymes_soil conditioners etc all OK
But even then, not much.