Thinking of Quitting Breastfeeding

Victoria
I don't want to but baby keeps saying he's not getting enough even if I sit for an hour with him! We have the correct latch now but I don't think he's sucking properly more chomp than suck. It doesn't hurt really but it doesn't feel right. We have to top up with formula from a bottle and since doing this regularly he has changed the way he feeds...
Any advice on how to get him to suck properly? Or shall I give up because it's tempting with the time it doesn't take to feed formula compared to the hours at the breast. At least if he's well fed I can at least enjoy some cuddles! At the moment he yells and demands more that I just don't feel I have. Xxx