(.)?

Yeah you're staying in the army guard, cant just change your mind last second

Since it's the National Guard it might be more difficult. Once you sign a contract and raise your hand you're considered in the military. Whereas, active components don't consider you 'in' until you ship to basic. This doesn't prohibit a transfer to a different component, it just makes it a longer process.

Your best course of action is most likely to contact an Air Guard officer recruiter AND your current Army Guard recruiter to discuss your options.