Withering tomato plant
I'm growing two tomato plants on my patio. One is perfectly healthy, aside from some yellow leaves that were probably caused by overwatering. The second one...I have no idea what's wrong with it. It starts to wither, I water it, it perks up for a day or two, and then it goes right back to withering. This picture is about 30 minutes after watering it. I don't think I'm supposed to have to water every other day, right? The temperature is in the low 80s with partial shade.