Like JL says, once you commit to an object setting, that is it. But it’s really not that big of a deal, because the settings are very basic and you don’t get very far into doing what you have to do if you decide the settings should’ve been something else.
It’s not like in real life when you decided to study medicine and 8 years in you realized it’s not your thing. It’s more like you ordered a hotdog with fries and then you realized you didn’t want any fries with it.