We feel what we feel; there is no "right" or wrongness about it. He has a lot on his plate; starting a new job, moving, having an operation, and he probably doesn't feel very good. I would just pat him kindly on the shoulder when he complains and hand him a box and ask him to pack the clothes from his dresser, please, or the kitchen things in "that" cabinet, etc. Give him easier things to pack where he can sit and doesn't have to bend or reach so much.

As you say, soon these things will be over and he'll probably feel a lot better. For yourself, if that happens, the same can be said; soon you won't have to worry as much about him and his changes and can work on your own projects.