What’s really frightening, is that these mini ice ages (grand solar minimums) can literally start on a dime. I’m talking warm age to ice age in less than a year’s time.
Now be really frightened:
Some years back - perhaps in the early days for the internet there was a valid study published that the 2 KM high glaciers of the Ice Age formed in as little as 100 years ...
I've seen that factoid stated in many places. This is one of the primary reasons folks need to get off their duffs and prepare now.
If you need any motivation to get in gear, listen to David Dubyne on the Adapt 2030 YouTube channel. He's got solid, factual data that will stand your hair on end.