assalamualaikum momies ! boleh share cara cerai susu

hi , any tips tak utk cerai susu for bby 1tahun and suggest susu formula apa yg ssuai utk bby sembelit . Sbb since lahir dah ajar formula tp mcm smua tak serasi and more thing dia jenis susah yak ? so how ? thanks Ps : I dah try enfalac gentle ease , s-26 gold progress , lactogrow