Co-sleeping?? My baby doesn’t settle in her bassinet...help!

Does anyone co sleep? My baby is 3 weeks old and the only way she’ll sleep is in bed with me, i put her in her bassinet when we first go to bed but when she wakes up for her first feed she will not settle back to sleep unless I bring her in bed with me. I don’t want to co sleep as I know she’s safest in her own space but I don’t know what to do. If I try and get her back in her own space she cries and won’t settle, and then we both end up staying awake and it completely wipes me for the following day. Does anyone have any advice on what to do, I’ve tried swaddling and she isn’t a fan of that and I’m at a bit of a loss.