A few thoughts ran through my mind.

Do you shower at night and then sleep on your back? Perhaps it is "ruffling" your hair during the night and it isn't bouncing back in the morning.

Other thought- do you think it might have been burned by the hair dryer and just in need of a deep conditioning treatment?
3a/b fine, high porosity, medium density. Mod- CG

Sulfate-free Shampoo: SheaMoisture Curl and Shine shampoo with Epsom salts.
Co-wash: TRESemme Naturals,
Leave in: TN Radiant volume, KCKT, YTC pampering conditioner
Summer styler: LA Looks Spiked Gel(summer only)
Seal: Argan Oil/Macademia Oil
Winter styler: KCCC, AIF, Beyond the Zone Noodlehead curling creme(not CG)
DT: GVPCB, coconut oil
PT: GVP Hair Reconstructor
Embracing my curls.