My 3 week old has been fighting naps for the last week or so. She'll be awake and happy for about 45 minutes at a time during the day. When we notice she's getting tired we'll try to put her to sleep but she's just fuss and cry for another hour or so! Sometimes she'll nap for an hour after this, but usually it's just 15 minutes of sleep and she's up crying again

Any tips on putting her down for naps during the day?? We tried the swing, pacifier, swaddling etc. and nothing is working! She sleeps well at night swaddled in her swing...