GCS Sour Kush auto outdoors

Since day 18 they haven’t got much sun been raining so much. Had them outside and a rain storm came in they were in it for about 10 min and soil got completely flooded had them inside under a light. #2 is just about to start transitioning can see very tiny white hairs starting to form by next week thin she will rlly start. #1 seems to be just behind #2 but is bigger. Both plants cotyledon leaves are just starting to yellow. I think with the heavy rain flushed the soil plus it’s nearing the end to how much nutes are in it. I gave both 1/4 of GH Trio. Soil was still moist so I only gave 1 liter each.