2 week old choking during every feeding?

I’m calling his doctor about it in the morning since they were closed today but our son has been choking during every feeding (exclusively breastfed) and also has been making gasping noises while feeding. The LC in the hospital said that the noises are from him taking big gulps of milk but he also tends to make these noises while sleeping here and there. I tried looking into what it *could* be and all that I can really find is either the start up of reflux issues, which our 2 year old daughter also has, and something called stridor. Hopefully we can get him an appointment for tomorrow but in the meantime while we have to wait, does anyone have any suggestions on what I can do to try and lessen the choking issue?