Can someone tell me if this is dissociation?

Last Thursday I was feeling angry about my therapy ending too soon and me not being ready to stop. Public health regulations won't allow me to continue Tx.

Now, since Friday, I feel like the whole past year of intermittent sessions, one hospital stay, c-ptsd symptoms and re-traumatizing memories, etc. never really happened. When I look back on the past year, it's like looking into a fog. I have an appt with my T today and have to keep reminding myself that I have this appt. Before, I'd count the days between visits. I feel I've reverted back to exactly the way I was when I started therapy last august. I didn't do this consciously either. It just happened. I guess this is how I survived a lifetime of sh-- and abuse, but I never realized how easily I could slip into this state of mind. And I can't pull myself out of it either. It's not denial. I know the whole year happened and when I think about it I get anxiety attacks and headaches, which causes the memories to automatically get stuffed back down.

It's a comfortable place to be but I sense it's a "false recovery" or learned helplessness resignation.