I just put in celebration bermuda in my backyard at my home in SE Florida about 4 weeks ago. It was looking fabulous for the first 2 weeks, then about a week ago, it started to turn brown and stop growing. I have a very sandy soil, and have an irrigation system in place. For the first 10 days, I irrigated every day for about 45 minutes the entire lawn. Then I cut it back to every other day for about 60 minutes. About a week ago, I cut it back to 75 minutes 3 times per week. I cut it with a reel mower for the first time around day 10 at about 2 - 2.5", then after a few days I lowered the mower down, I think I got down to about 1.5 inches, maybe slightly less, then all of a sudden it went from a beautiful deep green to patchy brown. I wondering if I over watered it, under watered it, or scalped it or if it's a lack of direct sun, since I do have significant shade. What can I do to salvage it?