Oh boy is he young and you already have had him almost a week
He is just a baby and could not possibly be getting dirty since he shouldn't be outside for more than going quick potty. He is not properly immunized to be taking anywhere other than your backyard. Why is it that he needs so many bathes
When my little Doodlebug was first home and a gave him a quick bath he would be so cold and would shiver and shake afterward I would wrap him up and keep him warm in a fluffy towel straight out of the dryer. Please be very careful with him he is so very, very young.