I'm glad that you are able to identify your feelings as being genuine grief. For so long, our DOC was our everything, our best friend, our lover, our confidant. But that soon changes and our DOC becomes a demon that even though we know it wants nothing more than to kill us, we still grieve it's loss.
To be honest, I never really grieved the loss of my DOC, which was opiates but I am also an alcoholic. My addiction caused me too much pain and cost me too much that once I got clean, I never missed it. Sure, there were times that I thought about using but for me, I think it was because it had became such a major factor in my life for 32 of the 43 years that I was alive when I surrendered. I didn't remember life without using.
The people I know who experienced grief said that once they began to see the positive changes in their lives, the grief lessened. I wish I could give you a time frame to look at, but I can't. Try not to look at it as forever, Just One Day at A Time.
God Bless,
Judy