Breast feeding questions??

I didn’t get to breast feed my first bc my milk didn’t come in until a week later and after that I didn’t maintain a healthy diet to be able to feed him as I had picked up postpartum depression.. I’m currently pregnant with the second and am doing things 1000 times differently. How can I ensure that my milk is here in time, I’m producing enough, and what if I want to bottle feed breast milk too? I read somewhere tht the more you bottle feed the less milk you’ll produce bc your body will start to think it doesn’t have to produce as much. But if I’m pumping a lot does it still make a difference? What is a good bottle feeding routine? Maybe feed at home on my nip and give the bottle away from home or if baby will be being baby sat ?