ADP and redetermination

I applied for adp in April this year and I was short on 2 points for the living and mobility sections. A week before I received my outcome I got a phone call from the case adviser asking me why my gp isn’t replying to their letters. I went away and called the gp and was told that one colleague who is in another practice is employed just to do this kind of work and they only work a few days a week and were on annual leave for a month . And it will take them months to get through the back log . Also this person hasn’t even met me or that, so a bit worrying so I wasn’t awarded the benefit when the letter came a week later .

I have sent in a redetermination and enclosed a full copy of my medical notes and proof of medication and also my award letter for Lcwra.

This was 3 July this year and I went on webchat 2 weeks ago to see if any updates and was told that they are awaiting back information from my gp!! So same scenario as before , told my benefit advisor and they asked me to ask why they doing this as they sent them my full medical notes ? I was then told this is normal procedure ? So this was 7 days ago and the 56 days is up tommorow since i sent the redetermination and the advisor said then they had 6 days to finalise my claim and would speak with a practitioner about it. I have a feeling this will be a no again . I have had a condition since 1996 and it’s been ongoing since then .

Do I then go straight to appeal if I don’t get a outcome by tommorow?

Thanks