The Botox does take two weeks until it is at its peak effectiveness. So seeing the PT next week is ideal timing. Sounds like you still have some anxiety around penetration if alcohol helps the dilation process, as the alcohol is helping your body relax. I think working regularly with the PT is going to be essential, as well as finding a better way to reduce your anxiety about penetration. Anti anxiety medication can be helpful, as well as meditation and breathing exercises. I would start with small dilators and get comfortable with insertion of a small size over and over. Then work your way up with the PT.
Keep us posted.
