I put corn Glutem Meal and Mollases down in Early February. Grass look great even through a dry Dallas Month. Should I apply anything now to give the soil a boost before the HOT weather?

In San Antonio on my St Augustine lawn, I apply ordinary corn meal (not corn gluten meal) on Washington's Birthday, Memorial Day, 4th of July, Labor Day, and Thanksgiving. Your mileage and enthusiasm may vary, but summer heat has no impact on organic fertilizing. You cannot burn your lawn by applying grain type fertilizers in high amounts.

Just an added note, there is a lawn forum farther down in the list where many lawn questions are already asked and answered.