You can try switching to a high fluoride toothpaste as opposed to the sensitive ones such as PreviDent 5000, which sometimes you have to ask for it from a pharmacist. Or, see if you are eating foods that are high in acid such as most fruits, some vegetables and drinks, which will make your teeth more porous and susceptible to sensitivity. Also, if you suffer from acid reflux you can ask your doctor how to manage that. Hope that helps!
Dr. Jessica Milne