Zanam, You don't sound like a "downer" to me. You obviously love your Father and it is frustrating when you can't find help.
In my posts, I didn't mean to make Whipple surgery sound easy because it isn't. I'm just over 5-1/2 years post surgery. There are definite challenges you face following this surgery and recovery can take a long time.
Have you tried posting on John's Hopkins discussion board? There are a couple of people that describe themselves as brittle diabetics who post there (they had their pancreas removed as well). They may be able to offer some advice for your Father re. diet and some of the other challenges.
Best wishes to both you and your Father.