L
We can't advise you on what action to take.
It should be possible to stop your current assessment process before a Decision is made but be aware, that this will return you to the All Work group with the associated pressure to find work.
If you continue and are found to be Fit for Work, then a "new" claim will require you to show a worsening in your conditions following that Decision likely to result in an award of at least Limited Capability for Work.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems