hi mummy, congrats on the birth of your baby ❤️ it can take days for the breast milk to start coming out. in the mean time, try to let baby latch on. if baby is too small to try latching, massage your breasts often to stimulate the production (can google for tutorial).
some food that can help boost milk supply:
flaxseed
oatmeal
almond
dried dates
dark leafy veges (spinach, broccoli etc)
all the best, hope you'll be back to SG soon with baby, both healthy and safely! 🙏💛