When I add new references early in my document, the numbering of the later references updates, but it is also added to the previous number. For example.

If I start with these two sentences:
Sentence A (1). Sentence B (2).

Then I decide to add a third sentence in between the first two with a new citation:
Sentence A (1). New Sentence (2). Sentence B (23).
*New Sentence inserts a new reference #2.
*Sentence B should only have the (3) reference after, but the '2' from before remains.

The citation for Sentence B will not automatically update to "3" as it should, but instead, the three is added, and the two also remains. Is there a way to fix this without manually changing all the reference numbers?

Thanks!