I hope you don't mind me replying. Huge hugs being sent to you after receiving this diagnosis. I've been there myself and I know the emotional turmoil of it all.
Surgery outcomes for AVSD are very good. .. But I will say is a stressful time. I've handed my daughter over to surgeons and Dr's three times. . I've at 4 weeks old. .. again for a cardiac catheter at 4 months and then again for her Glenn surgery at 5 months. She will have another surgery in the coming years.
It was exhausting and scary. .. But Dr's do amazing things these days. My daughter is now a crazy 2 year old. I'm very blessed. There are lots of groups online. ..A heart kids parents group on Facebook that I'm sure if you joined and asked about AVSD you would get lots of responses.
I'm here if you need to chat or ask questions.