Believe me if you were stuck on an island without electricity you would end up being able to use your hand eventually.
You were smart to bring in a vibrator to make your sex life more enjoyable with less jaw and neck pain from oral.
Our ultimate preference for genitals is organic oil - almond, apricot, jojoba or coconut.
All genitals feel more sensitive when you apply lubricant especially oil. Never tough a clitoris with a dry hand.
Do not leave the vibe one place but move it around or move your body underneath it.
You can retrain your clitoris to orgasm with less intense stimulation OR you can bring your vibe to partner sex.
Actually you have sensitized your clitoris by stimulating it on a regular basis.
I always recommend using additional lubrication for all forms of penetration.
So why would it matter if you use a vibe while you're fucking?
Any man who is smart enough to do this will also be able to continue love making long after his penis has gone soft.