Wa'alaikumassalam! Sayang, this is really important, please go see your paediatrician or go to the hospital ASAP, especially with twins at 35 weeks premature and jaundice concerns. Bilirubin levels dalam premature babies boleh naik cepat, so doctors perlu check mereka dengan proper testing. Once doctors guide you on their feeding plan and jaundice treatment (maybe phototherapy or others), then you boleh tanya paed specifically which formula suited for premature babies. A few of my mum friends yang ada premature twins, semua kena follow hospital's feeding protocol closely je, it makes the biggest difference. Jangan delay this, k? Paediatrician akan tau best next steps. Thinking of your little ones!