Our son was in 3 different hospitals over a 2 month period about 5 years ago. Looking back when discussing it with my wife we don’t actually know how we got through it as it feels like another lifetime and also in some ways that it happened to another couple.
My feeling from the whole experience is that you don’t know how strong you (and your partner) can actually be until you are really pushed.
Basically you don’t have a choice in the matter so you just have to hang in there (easier said than done obviously).