We’re at 12 weeks with our little one.
At 4 weeks things weren’t easy. I wouldn’t say things are easy now, but she is getting in to more of a routine, sleeping better, easier to get down at night, and is getting in to a pattern.
Maybe try burping a few times during the feed to get rid of as much air as possible? Ours still writhes about after a feed either with a bad stomach, or needing the toilet.