Breastfeeding

So I'm 31 weeks and 1day I'm kind of nervous about breastfeeding only because I don't know if I will be able to do it or if I'll even be comfortable. this is my second child I didn't breastfeed my son nor did I even attempt to. but for some reason I really want to try with my daughter. how do I know if I will even have enough milk ? plus being out in public everyone is all judgemental when you breastfeed in public or having to run a hide to feed the baby or covering her with a blanket which I think is just dumb being all under a blanket to eat I'm not saying to just pull your whole titty out but seriously I feel like if it was a female who just had her titties out eating everything would be fine. and I don't want to go through all the nasty looks for not hiding to feed my child. also people say it's really hard to do. my man wants me to breastfeed he thinks it will be better for our daughter. I would say he's only saying that because he won't have to get up at night but thats not the case since I'm doing it myself anyways since he's in jail lol but idk guys I need some help on deciding what to do.