A friend of mine who was not as endowed as myself shared how he felt bad. My advice to him was invest in a few vibrators and dildos to use with your partner and for goodness sake … enjoy and learn and love to give oral.
He looked at me with a cocked head. I said if you don’t have the reach, start with your “unit”. Pleasure her but hold off. Then switch up to oral and use a vibrator with a dildo and with time learn how far she can take it, then learn to insert your and use both.
Trust me …. she will thank you and when you hear her scream and get those shakes and hopefully cry a good cry. You will feel like you are super endowed.
Curiosity and open mindedness with confidence trumps cock size every time.