Homestead has partnered with Yardsworth to simplify SB 9 Lot Splits. Click here to learn more.
You can only use SB 9 to split a lot once. However, if you have a large property, you could subdivide your lot with a standard subdivision first, then use SB 9 to split one of the two resulting lots.
You would not be able to split both new lots with SB 9, because the same person (or anyone acting in concert with the same person) cannot use SB 9 to split adjacent properties.