My baby has so much mucus in his throat while a sleep dr said it's not in chest clear how can i get rid of it please i'm concerned he has silen reflux?

Clean the nose: Babies don't clear their nose very well and so the mucous can make a lot of noise. Use saline nose drops and suction out the mucous with a bulb syringe. You can do this frequently if needed, especially right before feeding or lying him down. Use a cool mist humidifier and give him extra clear fluids to drink to keep the mucous loosened as well.