What you describe is Post Acute Withdrawal Syndrome or PAWS for short.
Why We Don’t Get Better Immediately: Post-acute Withdrawal Syndrome (PAWS) | What...Me Sober? This link really helped me to understand what was going on after I quit. It also suggests some things you can do to lessen the symptoms that you are experiencing. I tried to follow the advice about those parts as carefully as possible and it really helped.
The one time I quit before this for a short period of time, I didn't seem to be experiencing this so much, but I think that was because it was before my drinking had progressed as much.
Also, I read some other articles, but I don't have links- you can Google for post acute withdrawal though and find more info, too.