Not sure if this is 100% scientifically backed but I read a bit by a dental hygienist on a forum that you shouldn’t rinse when brushing with proper toothpaste because it can help remineralize the teeth if when its not rinsed away after
Its annoying but its a good way to cut down on mindless snacking at the very least for me so its something I do sometimes. Hope its not voodoo
For sensitive gums, my dentist told me to rub the (sensitivity) toothpaste directly on my gums before going to bed. The toothpaste builds up the tissue.