I water once every day or two depending on how dried out they feel, it just seems weird that it was only the two that have consistently suffered with this issue the whole time. I could not water them for 3-4 days if you think that may be the solution? It looks better since I’ve stopped giving it as much water as the others though to be fair.
Let their leaves droop a little after a few days without water while in veg. When they get to flowering begin watering more liberally.