Changing If Bottle Teat

Hi Want To Ask, My 4 Months Baby Just Started No. 2 Teat Which Is For 2 Months Plus Baby Yet She Feels That The Flow Is Too Fast. She Will Not Drink Well With Teat No. 2 She Drinks With Caution, Only Sucking The Tip Of The Teat. Anyone Facing The Same Problem? Should I Not Change The Teat At All? Or Continue With Teat No. 2 Until She Gets Use To It?