If Mandatory Reconsideration takes too long can I go to tribunal

Hi,

I am an autistic multiply- neurodivergent woman with a cooccuring serious mental health condition and cancer (in recovery) and have lost my PIP - down from the Daily Living enhanced rate to nothing - a loss of £444 per month. This, along with knock on effects to my council tax reduction and my costings for my care act package of support - a further financial hit basically.

I’ve submitted a Mandatory Reconsideration but have been told it will likely be a good number of months before there is an outcome. I do not wish to wait it out for obvious reasons, so have the following questions.

Is there a time limit by which the DWP need to give an outcome for the Mandatory Reconsideration?

Is the outcome letter the Mandatory Reconsideration Notice?

Is it necessary to have a Mandatory Reconsideration Notice to appeal to the Tribunal?

Could it be disadvantageous to instigate Tribunal Proceedings without said notification?

Thank you for sharing your experience and any insights in advance.