I was married for two years before I could get my 'virgin at marriage' wife to even attempt to put me into her mouth. After another year of trying and some instruction on my part, she gave it a try fairly regulary but only when asked for. Over the last 49 years, she is comfortable in doing it but has not learned to do it to give me pleasure, it's more like duty BJ. She has never had any disire 'to learn' to make it more pleasurable for me. I have only had one orgasm from her doing the BJ.
I on the other hand, have performed oral on her from about a week after marriage, and most of the time, to orgasm for her.
My advice to the OP is to keep trying and maybe you and she will cum around ...............