WOW... he really is a great little guy.... would have loved to had seen the shower jump. Too cute.
Baby shampoo is not bad... just want to watch how often you bathe them as it shuld only be done as necessary. Too much strips their coat of natural oils which are really good form them.
Yuck food to better food is always a good thing.... try to stay away from chicken and grains - lots of bullies have issues with those products. Many members feed raw and/or home cooked meals. There are forums specifically for these topics.
People food -- veggies, fruits and some dairy are great for them.. A lot of us give carrots, green beans, blueberries, bananas as treats or part of meals. No-no's are onions, rasians and grapes - these are toxic to dogs.
Witch hazel on a cotton pad will help with keeping his folds clean... once every other day is good. And then every day with unscented baby wipes.