My two violins have different modes of starting up. The Colin-Mezin can be played immediately and has a bright sound and responds easily. No warm up needed.
The other violin sounds raw for about 10 minutes and needs a lot of rough bowing before it comes to a fully round sound. My routine on the second violin is to play the “Orange Blossom Special” which loosens it up.
However some of my previous violins depended on the weather conditions. Dry weather seemed the ideal however moist days were the worst and made sound production difficult and response sluggish.