PIP MR Rejected - Unsure if to go to tribunal.

Hi folks, so I need some advice on what to do next. Basically I recently had my PIP review and was awarded the same points for the Daily Living component but believe I wasn't given the correct points for the Mobility component. I was awarded 4 points stating I can stand and then move more then 50 metres but no more than 200 metres either aided or unaided, which I felt was a overestimation of my current ability. When I've tried to calculate it, I can walk about 15-20 metres before pain/discomfort starts to set in and I need to stop, rest and sit down. I have rheumatoid arthritis in the knees and ankles which heavily impacts my mobility and I decided to do a mandatory reconsideration appeal for the Mobility component which as failed. I was given the exact same points.

But I'm unsure if I should take it to tribunal. I've been through the process once before and it was a nightmare. Plus I'm concerned that doing so might cause me to lose the Daily Living component of PIP, as I've heard that can happen. I really don't know what to do and can't get any help/advice other than online. I would appreciate some advice for those with more experience with the benefit system than I.

Thank you in advance.