Where do you live? The kind of winter is a big factor here.
It sounds like your boy will probably start crawling sometime this winter. Find some go-to indoor spots with play areas that are good for relatively young babies - sometimes malls will have them, or in some areas you can find indoor playspaces with baby sections, or some childrens museums will have dedicated baby areas - so they can practice crawling and you can get the hell out of the house. Leaving the house with a baby in the winter is such a pain in the ass that if you're not careful you just won't do it very often, and that's not great for anybody.