I think I messed up (work stress plus higher dosage)

My manager seems to legit hate me for the last month, and I'm sensitive as it is (GAD, CPTSD). Have been through counselling.

I've been taking Zoloft (sertraline) for a couple of years. Dosage settled at 125mg (I had moved up to 150mg but the side effects were pretty horrible).

Due to being basically in a perpetual anxiety spiral due to work, I had my dosage upped to 150mg a few weeks ago.

I thought it would help my anxiety and obsessive ruminating, but it really hasn't. Plus now I'm muddy-headed and really tired and not feeling any better. Which I think is effecting my performance at work (my memory has absolutely tanked, I can't remember anything).

If I'm being honest I'm also drinking too much so that has to stop.

My worry now is if I stay on 150mg it's not improving my anxiety and it's making me feel slow and confused. But I'm also thinking if I lower my dose back to 125mg my mood might crash even more and I could have some withdrawals while I settle back down from 150mg.

I'm stuck. I don't know what to do here. 😔