I have a serious problem with actively trying to uphold your oath and failing triggering an oathbreaker situation. If you're genuinely undertaking actions that uphold your oath and you imply aren't physically able to do so, that's not breaking your oath, that's just failing to do a thing. Oathbreaking should be an active, conscious choice in some way. Even if you don't choose to specifically break your oath, you should at least have chosen to do the thing that broke it.
