Tapering back on, this is hell

Long story short, I’ve been off my 40mg Prozac for about 2 months, and two weeks ago had a terrible dizzy/panic episode, so I decided to taper back on. I’ve been on 20 mg for a week, and it has been hell. Main symptoms are panic, brain fog, dizziness, nausea, unable to sleep, exhausted, feeling very unstable both balance wise and mentally. I do also take clonazepam as needed, but I feel like it’s not working very well in the state I’m in, it just makes me more tired. It seems all I can do is lay down or panic. I can barely function at work or in any public setting. I called my psych, and he basically told me to keep going on the 20, and once we get to 30 I’ll feel more stabilized. He hasn’t sent any 10 mgs to me yet so I’m on this 20mg for I’m sure another week or so. How did you guys get through this initial period? I’ve been on/off Prozac before and have never had such a bad time like I’m having now :( I also have severe OCD and health anxiety so I’m just a mess and any advice is appreciated!