I guess we’ll have to wait and see. My understanding is that per 5e a paladins needs to be level 3 before they even take an oath, so it’s not clear how they could break it before then. But of course our EA paladins started off level 1 with an oath so we’re looking at some Larian homebrew here. I don’t see why, if we have an oath at level 1 or 2 we shouldn’t be able to break it, though.
That's the thing, I don't want to become an Oathbreaker and certainly not accidentally and then restore my state every time. (I'm in the process of reflavouring a replacement class for the non-existent Artificer Class for my Dwarven Guild Artisan).