7 weeks old nap attire & room conditions?

For those with babies who still have Moro reflex, how do you dress your baby for nap and under what conditions (aircon or fan, on the same crib)? I let my baby sleep with aircon at night because he wears the Love to Dream swaddle and Tommee Tippee swaddle, which requires the room temp to be lower. For nap time, I recently tried a letting baby wear a muslin swaddle and sleep with just the fan. But it seems like it is too warm.