is there any specific date? or just January 1st 2022?
If you've had points longer than a year on January 1st, it is my understanding that they disappear on that day.
After Jan 1st, and every day thereafter, all points 366 days old will disappear.
I really wouldn't wait to the last day. Not sure what time zone they use as the cut-off. Nor what the processing time is -- in other words, if you buy something the night before your points expire, but no one is at the office to process your order, your points could expire before they are officially applied to your order.