help with my Lil guy


I think he has something gong on with my 11mo.. so the whole time we were gone over Christmas (3 days) he didn't sleep good and was constantly fussy about something.. I thought maybe he was just tired but he was like that after naps too.. so when we got home today he's back to his normal self again.. which makes me think that he's one of those kiddos that don't do good in strange places.. so now I'm worried because next month we go to visit grand parents for a month in Al, Ms and Fl.. any idea of how to help him?