Before you drive yourself crazy and start taking the car apart, I suggest you get a proper coolant funnel kit (link below). What Im about to suggest is not possible without one because coolant would spill everywhere. So fill the coolant to 1/3 full of the funnel, start the car and turn on the heater all the way to max temp and max fan speed. Also make sure to adjust vents to face mode only and make sure AC is off! Run the car and give it several good revs to like 4-5k and hold for 5-10sec. Back off and repeat. This way you build extra pressure to push coolant around and possibly eliminate any air pockets that still might've been trapped in the system. Make sure you keep watching funnel through your windshield to make sure coolant is not excessively raising. If it does, back off for little and try again. Keep doing until fan kicks on and off couple of times. From experience some cars will bleed just fine from idling, others need that extra push especially when cooling system was completely opened. Hope it helps
https://www.amazon.com/Lisle-24610-S...ice+kit+funnel