Well, you could get more time, sure. You have a constitutional right to shared custody.
Is there any type of order in place?(from before??)
The shyster is correct if there is no order. BUT, you can override the six months which I believe the lawyer is getting from the UCCJA. If you can show a strong connection in your state, you could possibly have the hearing there. Two judges, one from MT, the other from Wyoming threw that out the window in my case. It took me ten years to end that missery.
You will have to show the mother is doing something wrong. The court will be reluctant to take time away. But, don't give up hope!!
One of the main things the courts must consider, is the availability of witness's. If your state has them, then juridiction should be there for convenience.
You can file in your state, she inturn would file in Fl(probable). The courts themselves would determine jurisdiction. IF she didn't file, and responds threw a lawyer, to your action in your state, you would have jurisdiction.
It can be done, you just have to go about it in such a way that she submits to the juridiction you are in. In other words, you have to play dirty.
Also, even at the worst, you end up going to Fl, those courts are bound by supreme court rulings, and there are a ton in support of fathers. Hell, you can even file in Federal Court to protect your parenting rights. AND, yes, judges can be sue'd if they cross the line. Keep these things in mind. A Federal Court has more stroke than any lower court state judge.
Check this out:
http://www.gitlinlawfirm.com/writings/uccja2.htm
That explains the history of the UCCJA, PKPA.
If you have more questions, please ask. Hope this was of some help.