Annual check ups seem a bit few and far between. I have a very rare auto immune disease - like you started with a bang but is (mostly) stable now. I'm now under just two hospitals but one is a days trek to get there and back. I see my main consultant every 3 months though.
I had to push to start with - one to even get a diagnosis and help but after for scans appointments and physio etc. Mine started at the start of lockdown- I was sent home from hospital after 2 months before they rearranged the wards for the covid influx so it was all new and scary and left to it.
I've found a good relationship with my main consultant. I've only had follow ups at the hospital recently with him as registrars etc had no idea about my condition. You'll probably find that you know way more about it than any drs you see(!)
I'm lucky that I can email my consultant via his secretary and he'll call back normally the same or next day. Our hospital also has a helpline where a nurse will call back to help - does yours have anything like that?
I've also found a supportive group on fb, everyone has a slightly different type but I've gained loads of knowledge and support.
Is there an organisation for your illness? Some have fb groups or helplines that might be able to offer support.
It's difficult though, I have to constantly follow up scans and early on, chemo appts, bloods and appts.
Your different consultants should be communicating with each other, do they ever have a MDT meeting, or could you ask for one?
Flares are more tricky, tbh I normally end up as an In patient so can't really offer advice, I have worked out the quickest way to get through the system for admittance though (!)
I keep all my notes on my phone inc letters incase I need to show them to anyone new and have to keep track of when I need to do stuff scan, etc incase they need chasing up. I also email a lot to chase results.
If you're currently flaring with inflammation are you on steroids or biologics? Can you call or email your consultants secretary to request an urgent appt? They should be able to check when the next available one is or speak to the consultant and hopefully fit you in sooner