I am gathering you are bottle feeding...... My little one took an hour or so to feed on the bottle in the first few weeks. Aimee went over to the bottle at about 2 weeks, it took her awhile to get use to feeding but now it takes her under 10 mins to take a 250ml bottle. I am finding the avent bottles are good, I used them with my first son and have just used them with Aimee. Just a tip, maybe the flow is too slow for your little one and it is taking alot of effort to get the milk out, maybe try a faster flowing teat, just a suggestion. As for the wind, maybe try some wind drops, we tried them with Aimee and it helped her so much, you can tell when we forget to give them to her, she is cranky as.
Well I hope I have helped you a litle. Goodluck and hope it gets better soon.