Some questions regarding bring infant along to US?
1) New packing baby Milk powder/rice paste with original sealed/un-open box, maybe need bring about 3KG in checked-in luggage? Need to declare for this?
2) Can bring drinking water which re-fill in mineral water, maybe 2 or 3 liters in checked-in luggage? Need declare?
3) Can bring extra milk powder on hand-carry luggage for baby during flight? How much can bring? Need declare?
4) Can bring empty Thermos bottle on board? Then ask hot water during on board, and then maybe need it during transit period.
5) At airport, can easily get hot water? Where can get it? Need prepare drinking milk for baby on the way go US during transit.
6) If 2 adult with 1 infant, can bring 2 hand luggage, 2 backpack and baby stroller?
7) Are those items can or cannot bring are depends on airline?

I really need to know ASAP about this, hopefully someone got experience about this, thanks.