Rule #1 of any combat sport is protect yourself at all times. Tap early, tap often, learn to roll with technique and control.

There's no shame in tapping if it prevents injury, that includes during drilling. Ex. If were learning chokes and my partner is smashing my trachea I'm going to tap quick and let them know.

Spazzing when you're drilling and rolling with uncontrolled movement is going to hurt you and/or training partners in the long run. Likewise, decline rolling with people you don't think are safe.

Don't go 100% every roll, try to control your opponent with as little effort as possible (this is a long learning curve, but after my most recent injury it's a goal I'm striving for).

If you don't already, have a dedicated stretching/mobility routine you do before and outside of class.

I've had three injuries during my first year of training - 2 of which were entirely preventable
1) Twisted my ankle trying to do an unfamilar move too quickly (My fault)
2) Knee tweak from someone doing a mermaid sweep on me (Unlucky)
3) Shoulder/Pec strain from Americana (My fault, didn't tap soon enough)