ID say at least 20 hours a week
every day at least an hour studying my main poker project.
an hour listening to a mindset based video presentation.
or an hour reviewing Video content on a coaching site
an hour running histories that pertain to my main poker project
and I play for 5-9 hours a day at least 5 days a week
I usually save hand histories for late in the day esp after any deep run where I review and mark ?able preflop folds and view
hands I marked during play. sort histories for later revues
sometimes I only spend 2 hours in pre play
because of above I never feel bad about taking a day or even a few days off from study or play.