Another question of Core & Growth workspaces

Hey been postponing this topic for a while, but my main question is:
Webflow is telling me to upgrade to the growth workspace. Im not sure if i really need this, as we will only be two users, and we have less than 10 unhosted sites. I have a team seat account but i dont know why it cant be the cheaper plan.
So: can i just upgrade to core workspace and save some bucks? How? can i change later?