Hello, I'm Danny.
To answer your question no. There is no break in type period to have the shocks perform their best. Depending what brand shocks you installed and if they are adjustable or non adjustable there can be several factors what you could be noticing for ride quality when driving. Here is a tutorial showing how to replace shock absorbers:
As far as my personal recommendations on my Chevrolet truck I've always recommended Bilstein brand. however, they are a little more pricey but ride quality is superior. Do you know what brand shocks were installed? Is the ride quality a little more stiff as a result? I've attached picture steps below on how to replace the shock absorbers on your vehicle. Hope this helps and thanks for using 2CarPros.
Images (Click to enlarge)
Tuesday, May 4th, 2021 AT 5:24 PM