Hi Zafira,
Did you send in any additional information or evidence with your request for MR? If not, you can still do so up until the time that you get a decision. If you want to start writing a submission for appeal and looking for additional supporting material then that is up to you. It could be a good use of time but, of course, it would take extra energy that you might not have.
Nothing on this board constitutes legal advice - always consult a professional about specific problems