Answer: The first step is to tug at a corner of the sod to see if it has rooted. If it resists tugging, the roots have penetrated and that's a good sign. Ample water should bring it back to its normal green color. If you can pull the sod up in strips, it has not rooted into your topsoil, which indicates the water you applied did not thoroughly soak the soil and the roots had no chance of penetrating into the soil. If this is the case, there may still be hope. Use a lawn roller (filled with water), going over the entire sodded area to push the roots down so they make good contact with the soil, then apply copious amounts of water so it penetrates through the roots and into the topsoil. This should help the grass plants root.
Just to see how deeply the water you apply penetrates, water as usual and then dig out a small patch of lawn. You should be able to see where the soil is moist and where it is dry by the color of the soil. If the water is not penetrating several inches into the soil, adjust your watering schedule.
Best wishes with your lawn!
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