The specifications for your motor clearly spell out with a 3.0 volt constant the motor speed will be about 14,800 RPM and the motor will draw about .300 amp. That is for the motor free running and doing no work.
Let's forget the motor for a moment. Draw a series circuit with a battery and resistor. The battery voltage is 3.0 volts and the resistor is 10 ohms. Therefore the circuit current is .300 amp. Now what happens if we increase the battery voltage to 5 volts? What happens to the circuit current?
Why do you insist on trying to run a 3 volt motor at voltages above 3 volts?
Ron