I started with breast feeding but am having issues with a lot of pain in my nipples. I am going to pump because I still want him to get my milk. I just don't know how much to give him at a time. He is 2 weeks tomorrow. How many oz would you give per feeding? I am a FTM so I am new to all this. I don't want to over feed or underfeed. How much would you give in a bottle?