u/Crimsoncuda

I’m new to tomato gardening. I have my Cherokee purple tomato plant in a pot with sweet basil. I’ve noticed the leaves have started wilting and I’ve lost some branches and not sure if it’s just because of the heat wave we have here in San Diego or the roots don’t have enough space. This container is probably 3-5 gallon, should I put this in a separate (bigger?) container? How often should I water? Currently watering every other day.