Products → https://www.howtowithdoc.com/fertilize-lawn/
Doc explains when to push your lawn with heavier fertilizer treatments. There is a "window" for warm season grasses when they can be pushed to thicken them up. That range is between 75 - 85 degrees and most are entering that zone. Push the lawn now with fertilizer then lighten up come summer.
Did you miss our previous article...
https://lawnmaintenancetips.com/lawn-maintenance-tips/spring-tips-from-a-lawn-care-pro