RLC series model in MEMS gyroscope

Hi all! I am now designing an oscillator for MEMS gyroscopes. The MEMS has an equivalent RLC series model; so i put it in a positive loop and make it oscillate. But my problem is: the equivalent inductance is of 2MH! and the equivalent capacitance is of 40aF. I see that Cadence does not simulate correctly the transient response of this RLC. I am very inexperienced about Cadence: Is there any simulation parameter to be changed in order to get a correct simulation? Thank you all for your answers