Shrink says cold trky

I (46, female)started out at 50mg January. Then to 100mg in Feb. Then back to 50mg in July and to 25mg in August like a week ago. Now my psychiatric nurse practitioner (yeah no real shrinks near me) has me quitting cold turkey. I literally just started taking 25 by cutting them in half under her instruction. I’m scared about side effects but she said I wouldn’t have any. Am I crazy or is it her? Thanks for any insight.