Am i likely to suffer any ill effects by stopping 30mg mirtazapine after 1 month and switching to 100mg trazodone plus 30mg buspirone for insomnia?

Maybe: "Ill" may be too strong a word. Doctors will probably disagree about this. Drect switching from 30 dose of mirtazapine to a 100 mg dose of trazodone may be too sudden, and it may require more of a cross taper; without it, there may be various discontinuation affects that wouldn't help sleep. buspirone, even though it is an anti-anxiety medicine, is, for many, stimulating, and may keep you awake.