As long as the switches aren't of the clicky variety (e.g. Cherry MX Blue) you can make the keyboard really quiet with GMK QMX clips or something similar [1].

How well isolated the keyboard is from the table can also make a big difference so it can be worth to put a piece of folded microfiber cloth or something underneath it.

[1]: GMK QMX Clip sound test https://www.youtube.com/watch?v=UroBHvL5LZ8