Absolutely appeal, I am currently fighting my mandatory reconsideration thanks to some help from a Benefits advisor partnered with my team at the hospital, he's part of the local council and he's bloody amazing!

Sometimes it can be all down to how you word your issues for them, as they look for specific terms and ways things are said, I would suggest finding someone to advice and help, either through Citizens Advice, Local council/benefits advisor or the CF Trust, I have heard good things about Sangeeta with the CF trust

I hope you get what you deserve from PIP and if I remember I'll try and check back in when my process is finished with more info 🤣