<human>: Could you distill the essence of the text into 1-3 sentences?

Hi everyone. My son has complex congenitally corrected transposition of the greater arteries. Catching complications from surgery and staying ahead of emergencies must be flawless if he is to survive.

I've read in years past here, awesome/amazing advice on how yall advocate for your kids, timing your arrival for when nurses get briefed for day, etc., etc.... 

I've had tears in my eyes over years reading your stories and help you've given each other. I really, really need your advice and suggestions now. Our son has two healthy older siblings but under age five and we have family in city where surgery will be performed, but we will not be in our home city. So, advice for helping siblings.... should we see a counselor to help siblings understand what is going on or how do we talk about all of this with them? I imagine myself glued to my son's side during recovery, but I don't want to damage his siblings by making them afterthought. How to juggle??!

He will have open heart surgery and actually two surgeries at same time. His surgery and recovery will be very, very intense. I've been told by mutual friend who happens to be pediatric cardiologist that I need to start advocating now, and keeping my emotions together now as well as start to accept that he might not make it--that his best hope if he makes it through surgery is my advocacy and staying on top of ICU staff. His recovery process must be executed flawlessly for him to survive unavoidable complications that will follow surgery.

Please tell me your best advice for keeping good relationship with doctors, nurses, how to be apart of his team so he has best possible outcome!!???

Thank you so much for your time and help!
<bot>: son will have major surgery coming up, and I am in great need of advice on how other parents have successfully navigated this circumstance in the hospital, leading up to, during surgery and recovery in surgery! Am grateful to any help!!!!