I Have A 15 Week Old Daughter And At A

I have a 15 week old daughter and at a few weeks old she started to struggle taking her bottle.it got ruled down to colic and i tried everything possible,she was put on comfort milk but then she starter refusing the bottles l,screaming at them and being really uncomfortable and constantly had really runny poos.at times she was sicky so the doctor advised to try gaviscon as could have been reflux.i then tried anti reflux milk and this made her worse,she was constantly unsettled and constipated.she ended up loosing weight and another trip back to the doctors they gave me nutrigamen to try.shes been on that now for around 5 weeks and although shes happy,feed time is still a nightmare and im using gaviscon and infacol.at times she will drink 6oz every 3 hours with a struggle but most times i cant get her to drink more than 4oz as she totally refuses l,screams and pushes it away but yet i can sit her in her bouncer and ar times she will take the bottle back.shes started putting back on weight and the doctor said some babies are just like that.shes still waking threw the night for feeds but yet can take a bottle at 4am be up at around 7,8am and then still refuse a bottle or not want to drink it all.the thing aswel is that she rarely cries for a feed and naps here and there threw the days for around 45 mins.i also find that during a feed im winding her often and she will burp and at times is still bringing up her milk,i also gove her cooled boiled water during the day but her poos are a dark green all the time and you can see she struggles a little to poo.its getting me really low and it's exhausting as i feel like most times im force feeding her but am worried shes not getting enough milk.