I always bumped at least 50%, stayed at the higher level until sides started to subside then increased again, and repeat, For me, I the pattern was always that sides were worst for the first 3-5 days after increasing, then leveled off and started to ease. It wasn't until 2mg/kg, 180mg/day, that they showed no signs of subsiding, were intolerable, and I dropped back down after a week. By that point I was nearing cumulative goal anyway, and just keep dropping 20-40mg off the daily dosage each week. The climb down. At that point, once you've gotten that high, when you're dropping, it feels like there are no sides, even at 100mg/day. (except chelitis, ie, lips).
I decided extending the duration a little with lower doses was an acceptable tradeoff for some well deserved relief,
My lips, by the way, are no longer dry, and all that "exfoliation" stripped years of chapping damage off them. They look much better than before accutane, and less prone to chapping now than before.