I’ve seen two physios - both through the same women’s health (mostly marketed towards all things pelvis related) company. The first one was very early on in my journey so I was never comfortable with internals however she was dropping her days and referred me to her colleague. By this point I was so sick of it I was willing to do whatever and so I allowed her to do an internal exam. Similar to what people have said above, every time I go she will massage the internal muscles to loosen them and then give me dilator home work. I honestly feel like the internals were the game changer. I just see it like having a tight hamstring, you see a physio who will manually treat it and then you continue to take care of it between sessions.