Drunk neighbor crashed against my house. Insurance company not responding. Need to sue my neighbor before the window to file a lawsuit closes.

Your own policy of insurance may be applicable.  Why not make a claim insead of chasing a non-responding neighbor/insurance company (although same as yours)?  Theoretically, the neighbor should submit the cclaim to his insurance company for handling.  Failure to pay under insurance bad faith law (with possible punitie damages) requires first party relationship (i.e. your own insurance). If payable, the insurance company will pursue the neighbor.  If your own insurance claim is not viable and depending on damage sum, you may be entitled to proceed in Small Claims Court.