Hello everyone! Can anyone tell me something? The baby is 11 months ol…

Hello everyone! Can anyone tell me something? The baby is 11 months old and has COVID. Now there's no fever anymore, but she has a stuffy nose and cough...because of this, she refuses to eat at all, she lost 500 grams in just three days...I don't even know what to help her with...I do nebulizations with an inhaler, I spray saline solution into her nose and aspirate phlegm with a syringe...I'm afraid she will lose too much weight.