I agree with alisonlg and kris. Very possible husband is maxed out or cannot cope, or processing it differently. ANd sometimes our partners will be on an opposite end of things as we are, sometimes I wonder if this is a way for them to try to "balance" things somewhat? Kinda like haveing someone watching out for the other end of things?
I will say, for me pesonally, when I was torn with my mother dying and me being her only careprovider, and my husband in ICU in one hospital one direction several hours from home, and my oldest difficult child home and her 17th birthday and easy child home struggling to get to & from school, and my son in presurg for immediate emergency surgery 5 hours in another direction, I was QUITE torn. I KNEW my mom was gonna die. There was a possibility my husband could die, My oldest difficult child was verbalizing possible suicidal ideations, my easy child was not coping well at all, BUT for me personally at that time? I felt MY responsibility was with my youngest child, my son at his surgical bedside. Why? I knew I could not save my mom. I also have 4 siblings and I had been with my mom at her side, not with my kids (which is indirectly related to how my husband became so ill and my son got hurt) Yes, of course I did WANT more time with my mom, - and I definely knew all about loss, having just lost the aunt who helped raise me and my best friend. BUT, I am my sons mom. and my son NEEDED me at HIS side. Becuz I AM his MOM. My life partner whom I love very much MIGHT be dying BUT...being "mom" my responsibility when so torn was to our child that we conceived and brought into this world. HARD choices and everyone will reach their own conclusions to what choice they will make and still be able to live with themself. Every single one of us is going to perceive things differently, internalize them differently, and worry over different things. It is possible your husband might have decided the hospital is doing what they can for your child, and you are there for your child, and maybe he is thinking he has to be with his dad, and be the breadwinner and worry about the future state of finances. (Many men are raised to believe this is their job- their contribution to family)
Of course, I do not know your situation, so, maybe I am wrong. Just tossing ideas out there.
Hugs to you. Sending good thoughts your way.