Research the legal timeframe - for either your state or your school district (not all states and school districts have mandated gifted ed, so whether or not there is a guideline for timeframe will depend on where you are).

I suspect that what will happen is the teacher and gifted ed teacher will put together a draft IEP and then meet with you to discuss. They may present it as a "final" but you can absolutely give input toward it when you meet.

Best wishes,

polarbear