Hello Timo,
I'm very sorry to hear about your Dad. He is a wonderfully passionate man. He's spoken to our club twice over the years and touched our industry/hobby all in many ways. I try very hard to be dedicated and passionate in my work with reptiles - your dad is the gold standard that I look up to in that regard.
He has beaten many odds, on many levels. I sincerely hope that he extends this streak. My thoughts are with you and your family in this difficult time, I wish you all the strength possible to face this painful situation. Look to your dad's example for inspration. . .
Very best regards, Marcus Cantos