Does the dose of accutane affect the progress your skin makes?

I am currently on my last week of month 3. When I started month 3, I was on 40 mg per day and my skin was clearing up well and I was feeling better about it. At my last visit, my dermatologist increased my dose to 60mg and I have not stopped breaking out(cysts). When one goes, another comes and its been like this the whole month. I'm very discouraged and I see no progression. That leads to me questioning if a change in dose affects the progression or is it normal? Should I be optimistic?

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