Baby in NICU

My son was born 35 weeks on Tuesday, they transferred him about an hour and a half away from where we live . They said we can stay at the hotel provided when we want to spend our time up there with him , and especially because I’m breastfeeding I’m gonna need to be making trips up there until he gets home . Only hard thing is I have a three and a half year old daughter who is extremely attached to me . How do I work out going up there and being with her as well . Unfortunately she cannot go with . I have mom guilt leaving her and I have mom guilt for being preoccupied with all the stuff going on with my son. Idk how to cope with it . Also had another question. He’s doing better with his oxygen, he’s in his own room, and he’s great at regulating his body temperature. We’re going up to see him tomorrow, will we get to hold him at all?