Tommee tippee

Do the tommee tippee bottles have a size 1 nipple?? My 7 week old falls asleep with the size 0 nipple. So I got what I thought was the next size up, it said 3months+? But when I opened the box it's a size 2 nipple? Is there a size 1? I didnt see anything other than the 3m+ nipple