M.K.
I moved overseas when my DD was 4 months old. Never had any issues and she slept the entire time. If he gets fussy and you can't get up to walk him around try a pacifier dipped in sugar water. My pediatician recommended this but only in an emergency. I never tried it but have heard it can work well. Otherwise I don't think there is much you will be able to do. At this age all mine did was eat, sleep and poop and not much else.