Blue Spruce needles turning brown
Unfortunately, it is not likely that your tree will recover it's former loveliness and there is nothing we recommend to fix it.
Blue spruce are not really well suited to our climate here and especially lately have been having disease and insect issues that are taking mature ones out.
The fact that yours is so young suggests perhaps an environmental or cultural problem- that is maybe a root issue related to planting or care.
For instance being planted or mulched too deeply, or having a problem with drainage or drought.
Here is a recent blog post from our Maryland Grows page about two diseases that can affect them: https://marylandgrows.umd.edu/2018/01/08/whats-wrong-with-my-blue-spruce-tree/