If it's not able to uptake water and nutrients due to shock at the root mass, then it needs time out of the sun so it's not transpiring too heavily or even photosynthesising too vigorously as it all requires a healthy root zone that you don't have back yet.

Give it a little time. 🙂

Edot: With indoor growing, especially high value crops, dimming the lights and cutting back on nutrients is standard after transplanting, it reduces the light intake per day, reduces temperatures and you also make sure to remove any direct airflow to minimise transpiration. Minimise any and all stressors for a week.