Nausea while tapering off Effexor

Has anyone had nausea while tapering off Effexor? If so, what have you done to help it? Anyone tried Zofran? I am afraid to do so because it is said that it could cause serotonin syndrome.
I have tried cannabis gummies that are very high in CBD and very low in THC.. It's the CBD that is supposed to help with nausea. It did help the nausea but made me tired.