Washing baby 1-2x week?

Kristen

I'm a stay at home mom so my 4 month old isn't around other babies,etc. and I've been only bathing him 1-2x per week bc he doesn't get dirty. I use water wipes under his neck feet and hands regularly. I read before where the oils on their skin help them from getting sick so don't bathe them unless dirty. He hasn't been sick at all yet, but I know some people that bathe their babies every night or every other night. Any opinions?