What should I do about Christmas with my son and my ex?

It will be my baby’s first Christmas this year and he’ll be 8 months old, the father and I are separated.. just wondering if there are any moms that have had a baby this young and separated from the father ?

what was schedule with the father like… including holidays.
The father works 2 weeks on and 2 weeks off.

Since he was only 2 weeks old when we split up i have yet to leave him alone with the father