My dear, if your medical was extended then don't lose faith. I read on one thread that an extended medical means that PR is in view soon. For your baby, I think you should try to email them through:
themaccraimmigration@international.gc.ca
Some people on this forum have had them respond to their emails, so I pray they do yours too.
I understand your frustration, I'm January 2020 AOR myself and I'm still waiting. My medical has expired, and I haven't gotten an extension or Re-med request yet. My web form and email enquiries aren't getting responded to either. But I'm hoping it'll end well.