you have been 10 years on different SRIs, stopping in three months and switching, updosing, downdosing, gives the result you have; if you do nothing from now, you will suffer the hell you suffer during months until some improvements will show, all the situation is "normal"
can we diminish the suffering? sometime yes, sometime no,
how?reinstating a low dose of the last, celexa, i would think as people said, 2 mg or 5 mg and then wait more than one month, often two are needed to stabalize (suffer but less), then i would reconsider the situation; i would not reinstate 40 mg, 30 mg, 20 mg, it would not be worth, too risky
will you suffer even reinstating works? yes, 10 years consuming cannot be thrown with the hand, and your CNS do no more want these poisons, he shows it you