I would say it's fine. Feel the side of your face- it probably feels cool at night too. Savannah has her daddy's thermostat, so when it's REALLY cold we put her in a lightweight sleeper. Cool is a long-sleeved onsie. Most nights it's a onesie or just a diaper. Her face usually feels cool. Her arms sometimes feel cool (she loves to throw them out of the top) but she is OFTEN sweaty on her back. Poor babe!
-Angela

-Angela