I bought a K'tan wrap in size medium last week. I've been using it with my newborn, but can't get a secure hold. Even if it starts out nicely (forehead kissable, secure wrap), it gets saggy within minutes, and I have to keep my hand on his head the whole time.

He is still<8lbs. Do you think he just needs to grow into it more? Or did I get the wrong size? I'm 5'3" and mid-160s currently. I purchased a medium. Considering taking to dry cleaner and having an 1-2in shortened on each strap...

Thanks for thoughts!