I am so sorry to hear about your furbaby, i too had the news a while back with my oldest cat Ash, he is the grey one in my siggy, that was taken before he became ill, he is now half the size cat sadly, but is doing reasonably well considering, he is on medication for his heart and the kidneys and it was ten months ago he was diagnosed, we are hoping he makes it to a year, but it is doubtful, however every cat is different, and it depends on many things i imagine, so keep up the good care and i am sure you kitty will live for some time yet,remember a year in a cats life is really 7 of our years, so that is a long time for them.

Wishing you both all the best.