Totally normal, once they start dieing back quit watering, leave be, then in a few weeks to a month, dig up, nutrients are now going into making you taters and not leaves, once you dig up you want to lay out to cure
https://www.everydayhealth.com/healthy-living/green-health/growing-potatoes-made-easy/
Thanks! I will stop watering. Easy. Now I just try and be patient and wait. Does the same go for carrots?