From a dealer's FAQ:

2. How much will Carhartt® shrink after washing?
Prewashed garments will have minimal shrinkage, but garments that are not will have a maximum shrinkage of 3 to 5 percent as long as the laundering instructions are followed.

also there is this one:

https://oureverydaylife.com/how-to-s...-12181765.html

I doubt you can shrink it so much that you can't wear it, but it may or may not shrink enough to get what you were after.