Baby refusing to nap

Alma

My baby is exactly 4 weeks today. For about a week now he’s been fighting his sleep between 1100 to about 4pm. He’s fed clean diaper, & swaddled. As soon as I lay him down he wakes up within 5 to 10 minutes. If he stays in my arms he still wakes up. I’m currently breastfeeding and he does not use me as a pacifier nor does he use one (I tried, he didn’t like it). Any ideas why this might be happening?