I applied Canada TRV since my Father will undergo operation by September, I will be the one who will take care of him, and it happened to be on October 10 will be my step brother's wedding in California.
This doesn't make sense. You mentioned 3 other family members are Canadian PRs, so they can take care of your father. If they cannot then they can pay for a nurse to help him in those days. Said that your travel to "take care of your dad" is unnecessary and in the worst case attempts to take a job from a Canadian.
You already mentioned you could leave 3 months in a row, so there is little point on adding work ties to your application. It is clear your job is not that important to be considered a tie.
IMO you have no business in Canada and an approval seems unlikely.
