Thinking of coming off Mirtazapine.. experiences?

[Chellebells]

I've been on 30mg Mirtazapine for about about 18 months and I think it's time to start coming off. It seems to be causing more problems for me. I have high glucose levels, high liver enzymes.. both which I think Mirtazapine are to blame for. It plays around with my sugar levels, I feel tired constantly, Derealisation, memory loss, I get agitated easily, muscle twitching,dry mouth and I have put on so much weight putting me in the obese category. I generally eat well and I go to the gym about 4 days a week and I'm STILL continuing to gain weight. I need to come off of this, as I don't think I can go forward in life whilst being on this.. Get married, travel home to London, be able to work. I would of came off this a while ago if it wasn't for withdrawal. I'm so terrified of coming off of this medication. I have heard the withdrawal is like hell. I intend on coming off very slowly. I'm just so scared. I've worked so hard to get to where I am now. From being bed bound with anxiety to being able to go the gym and shopping and I'm scared that all my hard work will just go and I'll end up in square one again. I couldn't bare that. That time was probably the worst time of my life and I'm only 24. CBT has helped me so much more than meds have, and I wish I never started on these.

Has anyone got experience of coming off Mirtazapine or tapering off? Any experiences of going down from 30mg to 15? Thanks