Breastmilk to Formula

Hi mommies! Can I ask for your advice please. I have to go to the US without my baby kasi my father is in a critical condition. Need na po namin umalis agad. Hindi na po umabot visa ni baby 😭 Breastfed po siya and wala ako stash since direct latch siya sakin. How can we introduce formula to him while I’m away? Pahingi po tips please. One problem pa po namin is hindi siya nagbbottle paano po kaya yun 😭 Thanks po sa sasagot.