Hi Ade,
It's important to write everything down as if it were a new claim - so I would add everything onto the paper. If you're lacking space, attach additional sheets to the end with your NI number on and what question(s) your answer(s) relate to.
Also, yes to your 2nd question. I waited nearly 2 years for my reply when I first applied in 2020!
Chris.
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
