My 6wk old daughter randomly gets strangled in her sleep. What can be causing this & how can I stop it? (it usually does not follow feedings)

Define "Strangled" Your question is unclear in terms of what you mean by "strangled." reflux does not need to occur around feeding time. If you mean shortness of breath, or intervals of stopping breathing (apnea) you need to take your infant to a pediatrician very soon.