Hi.  Your dad is 20 years older than my husband was, when he was also diagnosed with nsclc.  A lot depends on your dad' s general state of health with regards to what treatment he might be able to tolerate.  The Platinum drugs are really tough going. My husband also had cisplatin with vinorelbine.  He was really knocked out by the first cycle of Chemo.  Then he was a bit better prepared for the 2nd and they'd better sorted out his post Chemo medicines.  The nurses will have given you/your dad a list of side effects and explained how maybe 7-10 days after Chemo, you're at your lowest.  Then the idea is that you slowly build up again, before...heading for next Chemo.  It is an ordeal and you can only take it step by step. Your dad should have a phone number for specialist nurses to contact about any symptoms so perhaps you should encourage him to call if only to get some reassurance.  Good luck.