unable to do sufficient pumping

malz

Hello guys.. I had c section and hospital policy was to keep child in nursery so my baby boy was kept in nursery for 3 days and was on formula feed.. when I came back home I tried to bf him but he didnt.. now he is 3 weeks old and is on formula.. but I pump for him. my question is I think m not pumping enough either my technique is wrong cz when I press boobs there is milkvpouring out but in pump I hardly make 1oz.. the pump m using is fralin manual pump. if anyone can suggest whts wrong.. cz I want my baby to feed on bf too