My lo cries get head off if we put her in the swing for naps. She used to sleep in it several hrs at a time. Now when I see her yawns I immediately place her in the swing it does not work anymore. She would nap in my arms between 15 to 1.5 hr. for the last 5 days she napped at the most 3 hrs during the day. I no babies need to sleep for development. What else would you recommend so I can try to soothe her to sleep more or longer? Thx