All totally normal at this age. We only contact naps during the day still at 11 weeks. I find a carrier is great for getting stuff done and keeping them asleep ! Also keeping on schedule with wake windows.
I have found some serious success with baby wearing for naps. If my little one isn’t going down for a nap during the day, and I strap him on while I walk around the house or a store, he will sleep for an hour or more
Sleeping in your arms is completely normal at this age as they don't know you are separate people yet. How long is it between waking up and trying for a nap? Yawning is one of the last signs of being tired and actually means they already want to be asleep so they are overtired and struggle if that's the point you start trying.