Nasasaktan when farting

Hello, ano pinakamahal na milk? yung enfamil ba or yung similac? My baby is now 7weeks old ang milk nya is S-26 Gold. Okay naman poops and everything pero bago lang to na nahihirapan sya umutot minsan umiiyak pa kasi nahihirapan and nailalabas naman nya. Planning to shift her milk to similac since s-26 and similac yung reco ng pedia nya. Ano mas better? Similac or enfamil?