I'm just glad you talked to an actual attorney instead of taking some of the half-cocked stoner logic in this thread to heart... best of luck
That 2 lb of kief may now fall under a medical defense, but it would be a whole lot easier if it never gets found in the first place.
Cops knocked on my door once. Within 24hrs, I cleared out my house and left that state. 10 years later that state has legal marijuana. Though here in Cali, I feel pretty free. But there are a few counties out here that scare me. Are you in a relative normalized place or a place like san diego or even Marin? Also, if they had a reason for a warrant, they would have brought one. And 2 months after your last pull? What on earth could they get a search warrant for? Definitely not your most recent months power bill or a infrared.
Good luck and I also think they aren't going to waste more resource in a state that has so many other problems without a definitive reason.
Don't talk to them,don't open your door for them and step up security.