Yes, I definitely identify.
Post Acute Withdrawal Syndrome was the only thing that really defined it for me. Memory issues, cognitive impairments, lethargy and sleep disturbances came after getting clean/sober. The link to follow has been remarkably accurate on my journey. For the most part with, 2 years clean, I'm in a very different place than when I started -- so much better. I think it's worth noting that the site emphasizes that total abstinence (recommended via a program of recovery) is essential.
Post Acute Withdrawal Syndrome:
PAWS « Digital Dharma