Hello @Richard_Lederer,
I agree with the others, there seems to be something slowing down the startup. You might want to look into that, as it can be an issue with your setup.
But to answer your question, if the files you change don’t affect the database structure and are not part of the bootsraping, I believe you can add them to strapi’s watch ignore list via the option admin.watchIgnoreFiles in config/server.js
See Configurations - Strapi Developer Documentation for more information.
But again, this is not the best option, and you really should check why the server takes so long to restart. It only takes 10 seconds on my setup with docker!