You're probably off by more than you think. Seed words are chosen such that they're not easily confuseable, i.e there wouldn't be a "internal" and also a "interval". My guess is, you probably typed two in the wrong order.

That said, your chances at recovery are very good. You have most of your seed, with either one wrong word or two words swapped, that's not very many possibilities. And you have the target address to verify a successful brute force.

Have a look at seedrecover from the btcrecover project, it should be able to do this for you almost automatically.