I just did a posting but I thought of something.
See if this helps in holding the needles.
1.Do a row, knit or purl doesn't matter.
2.Take the needle, with the row you just did, and put it in your left hand and make a fist , turn your fist so the needle faces the ceiling. If that doesn't make sense basically make a fist, the sided of your fist should face the ceiling and the floor, and insert the needle, pointing upward.
keep that position and open up your thumb and 2nd (index) finger. Like an "L"
In your right hand take the right hand needle and insert it as if u were going to do a knit stitch.
When the needle is in place take your left hand thumb and index fingers, that are open, and hold the right needle. You will need a little more help so your middle finger can help to balance them so let the side of your middle finger knuckle rest on the right needle.
I hope that makes sense and works for you.