I currently nurse my 10.5 month old DD 2 times a day and give her expressed milk in bottle 2 times per day. i have decided to stop pumping. I have enough milk stored in freezer for about a month. I am going to take a few weekend trips (mid September and early October) and can not travel with the frozen milk without it spoiling. i was wondering if i should start introducing formula so that i can give her that in the bottle when we are away. or can i give her cows milk?? I dont want to increase nursing sessions as i dont want my supply to go up... any advice???