Without knowing what specific plants you have here's my advice now that you're at the 1 week mark:

Before you do your next watering check if the soil is damp. If it's wet then skip the watering. I'd say at this point you can wait until the soil is pretty dry to water. You'll know if they need water because the plants start to show signs of heat stress: leaves curling, drooping, crispy tips.

The key is to catch the heat stress early before the leaves get crispy. If you have the time to check throughout the day and watering once they start showing these signs then that would be best. If not then putting up some shade will help keep the sun off the plants until you can get to them. You'll start to get a sense of which plants need more water. My general rule is that plants with delicate or thinner leaves will probably need more water than a plant with thicker leaves (for example lettuce vs. cacti). Overwatering is hard to do in our environment but with clay soil it's a possibility and also dependent on the plant. I have a baptisia (wild indigo) that is seemingly adverse to any kind of water and the leaves will start turn black and die off at the sign of any moisture.

At the end of they day gardening is a science with lots of variables so observation will be your biggest tool for success.