Study hours to prepare for the Sbl paper?Study hours to prepare for the Sbl pape

As you say, everyone has different paces. The main place to spend time is question practice because this exam does no primarily examine knowledge, it examines application and problem solving. I suppose listening our lectures and studying our notes might take 20 - 30 hours, but doing enough question practice and analysing the answers might take require several weeks of full time study. Perhaps repost your question on the general SBL forum and ask other students how long they took?