Well my daughter had a hernia surgery, but she was 7 at the time.
Just be there.
Pack all his comfy loveys and anything else that is his favorite.
The Surgeon/Nurses will inform you of after-care information... and what he can/cannot do after and about recovery. And what to do to tend to him after the surgery.
- ALSO, he may not be able to have a 'bath' for a bit of time or be submerged in water, after. Depending on how the incision was closed and his surgery... and if it can or cannot get wet. SO ask about these things too.
And if you can give him a sponge bath, and when.
Ask any questions you want.
They are used to that.
Yes, bring a bag for yourself too.
And cash/money.
The hospital has a cafeteria.
Do NOT expect to have boatloads of visitors... you probably do not want that AND the hospital may forbid that, being he is in ICU and a young child.
NO one who is sick...should go visit him etc.
I would keep 'visitors' to just you and Daddy.
Ask them, what to do per keeping him relaxed after. BUT, being he had surgery, he probably will not want to be all active right after.
He will probably be groggy or in pain.
Ask about pain management. In case.
ASK the Surgeon.
The Surgical team & Anesthesiologist Doc, in my daughter's case, ALL met with us, first. And answered ANY and all questions.
Don't change up any of his routines, for now. It is not the time.
Let him recover in his own time.
Don't force sippies on him, yet.
NO rush for that.
Especially now.
He is young.
MANY babies his age, are still on bottles.
NO harm in that.
Let him have his bottle.
This is not the time or place, to take away his bottle.
I was able, per my daughter's surgery, to be in the operating room with her, initially, as they started the anesthesia. Then, I had to leave.
We could be with her as they rolled her out of surgery and into the recovery room.
ASK your Surgeon, if you can be there or what the routine is.