Last night, I washed our bakers, scrubbed them with a vegetable brush and water, and then plopped them into dish soap and water bath for 20 seconds. This was at advice of a doctor video I saw two days ago. Then, this morning, I read not to use anything but water, What do you recommend?

What you read is correct. Simply rinse potatoes before preparing, using clean water from the tap. Definitely no soap is required!