That’s great you’re feeling better.
I’ve been on Lithium for 4yrs. (Current dose 1350mg). It works so well for me that despite some side effects I won’t be ceasing it anytime soon. Lamictal and Abilify didn’t work for me.
My Lithium levels are perfect at 0.8, my thyroid levels are normal on thyroid meds and my renal function tests remain the same. I have a long term renal condition that I manage well so I’m not too worried about it.