Going into hospital. Will this affect my appeal process?

Hi guys 

Needing some advice I am currently going through a limited capability component assessment It haven't been accepted at the moment I am going through the appeal stage to tribunal.
I have had a date come through to have my operation and its in a weeks time the recovery time on this is between 6 to 8 months I haven't updated my journal at the moment to inform them of this I am not sure if it will affect my appeal process and set it back months as this has been going on for over a year and a half. Or it will help my appeal just needs some advice on what it will do to my appeal and what I should do thanks