Welcome
@maki22. I'm going to try and answer your 4 questions below. My answers are in italics
1 what is really the true timeline for processing the PR spousal sponsorship in avo? is it 12 months or longer? when will our application be finalized do you think?
AVO has been averaging 12-14 months. No one on this forum can tell you for sure when your application will be finalized, I'm afraid.
2. if i returned to canada before we got the decision would that impact the decision for pr? does anyone know the timeframe for getting the citizenship cert and passport for baby?
Returning to Canada should not impact your decision. I don't know about the cert for the baby, but the CIC site may be able to tell you about the timeframe
3 can the pr be expedited based on factors of having child?
I'm yet to see such a case which doesn't include humanitarian reasons (e.g. health issues or other). Several of the people on this forum who have children did not see any significant decrease in timeframe compared to those that didn't that I know of.
4 does it matter if i am a sponsor as female and not male?
There was some speculation in the forum over the past year that gender made a difference, but I haven't seen any data that suggests that. I am female Canadian and it took 14 months to sponsor my hubby.