Honestly I really want my wife to give birth after 9 months in October, but I really want the child to be born on Christmas so I'm going to request my wife hold it in until then.
Do you think it is possible to hold the baby in two more months?
I think that sounds right.
It will be impossible to hold a baby inside after it is ready to be born, so you shouldn't try to force your wife to do that. It would be better to be ready in October.
I think she should do it.
What you're requesting of your wife is kind of unreasonable. I understand that you want a certain birth time for the child. But you have to understand you cannot choose the exact time, and forcing it could harm your wife.