4th month on roaccutane. Struggling with the mental side effects. Should I stop completely or take 1-2 pills a week instead?

I'm on my 4th month of taking roaccutane 20mg and lately the side effects have begun to take its toll on me. I've gone through normal side effects such as dry lips, constipation, and back pain but now it's beginning to effect me mentally. I having trouble concerntrating and I've lost my motivation for school. It's my final year and I want to be in the best psychological mindset. I love my clear skin but am struggling mentally. What should I do?

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