Thanks!

For next time, do your new lawn in the fall if you can. You won't get nearly the amount of weeds and the new grass roots will require much less water after maturing for the winter months.

Don't use any more chemical fertilizer until the temps cool down. You can use organic any time, but no chems in the summer.

Also your grass will do better in the summer heat when it is left to become tall. Short grass is much more stressed in the summer than tall grass. I would set the mower deck to the highest position and skip mowing every other week or three.

If you are looking to apply something, use any clear shampoo at a rate of 3 ounces per 1,000 square feet. Do that before you put your normal 1 inch of irrigation down. Then repeat in 2 weeks. That will soften your soil and allow much deeper penetration of the water down to the roots. You can apply as often as you like and don't fret about getting exactly 3 ounces per thou. You want more than zero and less than 50. 3 ounces happens to be 1 gallon per acre so that's where these recommendations come from. When overdoing it doesn't matter, we try to make that point. There are people on this and other forums doing experiments with overkill. So far as we know, soap can go on heavy without harm.