Question about applying for an Armed Forces Partner Visa

A bit of backstory; my partner (who is a British citizen) and I have been together for about two years now. He’s currently in the Royal Air Force completing his basic training. I’m on a graduate visa that expires September this year and am currently living and working in the UK and have been for the past two-ish years.

During these two years, we have not lived together as it didn’t make much sense to do so. I live close to where I currently work and before he quit his job and got his start date to join the RAF, he used to live near where his previous job was. Any plans that we had to move in together when we first got together went out the window due to the fact that we knew he’d be joining the RAF eventually and that he’d be gone for a while. Despite that, we have spent the majority of our free time together either at his or mine and we have joint purchases etc to prove the legitimacy of our relationship. We intend to live together once he completes phase 2 of his basic training.

Anyways my question was under our circumstances, would I be able to apply for an armed forces partner visa or should I go for the family route partner visa? I’ve started applying for the family route visa but have recently been made aware of a partner visa specifically for those whose partners are in the military and was wondering if it would be a wise switch.

From what I’ve read on the Home Office’s website regarding this visa, a lot of the information is directed towards people applying outside of the UK so is this even an option for someone like me who is looking to extend or rather switch their current visa once it expires? Would my partner even be eligible as a sponsor for this visa as he’s only still in basic training? Or would he still be counted as a serving member?

Apologies for the extremely stupid question and all the waffling! Applying for a visa is so stressful and I’d rather get all my info right before investing effort into this.