should be fine. You can ask the doctor to draw blood and
do a liver
panel if you're really concerned.
4) See # 2
5) You can taper if you choose. Some people can taper, some can't. I couldn't. To be honest, you're taking such a low dose, going cold turkey would probably be best. Again, it's up to you. If you try ct and can't, then cut your dose by 1/4 every 5-7 days and see how that works.
There's some more info on my profile page if you're interested..