Baby refuse to nap in cot

My 1 month old baby slept well at night. I can easily put him to sleep. But during the day, is very hard to get him to nap. He will fall asleep in my arms and i will put him in the cot. But he will wake up shortly (10mins) and cry. I will have to carry him again and this keeps on repeating. I notice he loves to be carried to sleep. I am really tired and worry as i know sleep is important for newborns. Any mummies face this issues and any tips to get him to nap?