What Formula to buy??

Nicole β€’ 10.03.15πŸ‘°πŸ»πŸ’ - 06.06.17 πŸ‘¦πŸ»πŸ’™ - 07.03.19 πŸ‘ΆπŸ»πŸ’œ
FTM here and I'm so lost what kind of formula should I buy for my newborn? He's not due till the end of May but I wanted to starting stocking up now. Please no comments about breast is best and all that!! I have my reasons (personal and medical) and won't be moved and really don't care. Thanks :)