Anak, this is really a question for your baby's doctor or your dad's TB doctor, they need to know about his lifestyle para ma-assess nila ang actual risk, kasi yung vices niya ay nag-affect talaga sa how meds work. Don't risk it with your baby's health; please ask the medical team directly bago pa mag-hold ng baby, okay? Your worry is valid at important ito na i-address properly with professionals. Rooting for you at your little one, sis.