In the beginning u should take it how ur Dr says to so it will build up in ur system and ur body could get used to it. After a while I was able to skip a day bc it built up in my system. Try to stick to the dose tht is prescribed, it will b a lot better for u and make things a lot easier.
You should really stick to a consistent schedule. What dose are you on? It's not abnormal to feel some mild w/d like symptoms in the first week or two, while the body adjusts.