Communion hymn selection during the Christmas season

Hi everyone. I hope I'm submitting this in the correct category. I am picking out hymns for this Sunday up until the Baptism of Our Lord and I'm trying to figure out communion hymn selection. Last year our pastor said he would prefer more Christmas carols. So I'm trying to accommodate that request, however, does that give me licence to program Christmas carols during communion then? (for example, "Away in a Manger".) Or in other words, does the Christmas season trump the hymns being purely eucharistic themed?

Any advice is greatly appreciated. Thanks so much!