It’s happening that fast. If you can try and get your wife or someone to flip the breaker for you, or if the air handler has its own switch (most do) turn it off there then flip the breaker. Go back to furnace and turn it on so you can see the ignition sequence. I’m assuming the control board in your furnace is receiving a signal from your thermostat or you wouldn’t be flipping the breaker repeatedly. The relative sequence of events for a furnace is like this: generally, your blower motor starts, then your inducer motor. They have little tubes connected to them that creat negative pressure on a pressure switch that has little relays on in that talk to your board. That insures that the furnace doesn’t heat without exhaust or blower fan running to prevent fires and other not great stuff. Once the pressure switch is happy and can tell your fans are going it’ll send power to the igniter. Next to the igniter is a little temp sensor. Once the temp sensor detects the igniter is hot enough to light, the solenoid on your gas valve will receive voltage from the control to open and you’ll get flame. The igniter will then turn off and the flames will heat the thermal pile keeping the gas valve open. No flame no gas. That’s the basics of how almost every furnace works. Hope that helps.