I don’t like to backstitch when machine quilting, unless it’s at the edges, within the seamline, where it won’t be seen. After knotting my threads, I like to bury the thread ends before cutting them off and make the knot disappear by tugging on it. Sometimes, my thread ends are not long enuf to thread through a needle very easily.
I either saw or read a hint about self-threading needles. I got a package at Joann’s. They were called “Easy Threading Needles” by Dritz.
then slip the threads in the slot --
And pull the needle through, pull needle off --
Trim the excess thread ends close to the fabric, thread tail disappears in the batting --