Intruducing food for baby

First time mommy here, I'll be intruducing first food for my baby soon. And she'll be 6 months. Maitanong ko lang po, ilang beses sa isang araw kakain dapat nang solid food si baby. At gaano karami ang tubig na ibigay sa kanila. Pls also share your routine especially giving them milk if 2 to 3 hrs interval.. Its my first time and i would love to hear your thoughts. Thank you for reading.