Possible to Just Get my Bottom Teeth Straightened with Invisalign?

Not recommended by a good provider. Its better the fine tune the entire bite and anterior teeth when doing Invisalign and you will get a better result.

Hi. . It is possible to do invisalign just for your bottom teeth as long as your bite will allow it.  I would recommend you see an orthdontist so that they can evaluate your bite and make sure the case is set up properly so that your bite is not altered too much and you have a good relationship between your upper and lower teeth, (since you are not treating the upper arch.)