Thanks for writing in.
Sorry to hear about your father's illness when you are away from him.
The main criteria in this situation would first be the serum creatine
and blood urea levels, if they have been stable for last 3 weeks or not. If they are unstable, he can go in for renal failure
at any time (matter of weeks). The second point is how he is responding to pneumonia
treatment. Has any particular pneumonia treatment medication further deteriorated his general health condition or not.
You may discuss the above two points in particular keeping in mind his recovery from pneumonia with his present kidney
Hope this helps.