Shower – How to reduce the 2“ shower drain to match the 1 1/2” ABS drain plumbing

I have this Kohler shower base that I am about to install. At the bottom of that page it says it pairs well (for them) with their shower drain

Specs here (PDF)

Here are the dimensions for it:

Question: Do I need to find a way to reduce from 2" to 1 1/2" or there is similar parts that can fit my shower pan and that match the 1 1/2" ABS pipe that I have for the drain ?

Update:
After reading the below answers and recommendations and after asking around as well I went to the store and I bought the shower drain and both a reducing coupling and a reducing bushing. Both resulted in nearly the same size of the coupling and none of the fits in the space I have below the floor
Here are some pictures:
-coupling comparison

-current situation -everything is 1.5" here but the drain needs 2". The problem is that I need to push the trap downward in order to create room for one of the the couplings

Is this an acceptable and functional solution? Does it have any caveats ? The idea is tp put a piece of 1.5" pipe (violet colored in the picture) between the crown of the p trap and the trap itself like below. The yellow pieces will be sized accordingly what you see if just for illustration

Update2:
OK here are the result of this evening attempt to make room for a lower trap and bigger seal depth

Final result with the drain flush with the floor but there is room to move it higher when the shower base gets in its place

Here is the overall height of the assembly

And here I am making it easier to measure the seal depth by positioning the tape as needed