why do you think you're not doing enough?
I don't feel improvements?
if you want to increase volume, you have to be very disciplined with rests and so on. moreover, changing targets can also lead to bigger sessions, for example you can train PE for your fingers and forearms in a certain way, then switch to big muscle groups, using walls of different steepness.
I also think that you have to really focus what you want to improve at. targeting multiple objectives, I think, is very difficult for a non professional athlete.
then, I don't mix fingerboarding and campusing with wall climbing anymore.
I use fingerboarding sessions as "rest days" when I'm feeling physically worked. plus, I want to dedicate long sessions to fingerboarding and after that I'm done for good.
but if you want, always fingerboard or campus before climbing. any training session must go from specific tools (fingerboard, campusboard, systemboard) to general tools (bouldering, leading).
if done properly, some intense campusing or fingerboarding can obtain an inmediate neural recruitment that will make you climb like a beast (but it doesn't happen regularly).
also, when doing 4x4 you should see when you fall off, to trim the problems perfectly: if you fall on the 2nd go it's too hard, if you don't fall it's too easy. same thing for the power problems, if you don't even latch the holds it's useless.
also an increase of general fitness could help you, it could be doing weights, or something else.
oh and skin management, as Jerry says, is crucial.
I found it helpful to note some very different sessions, so that each day I can pick the right one for how I feel, skin, etc. in order to train multiple days on.
if in doubt, rest.
finally, if you find yourself stuck, don't go around asking the strong climbers what they do, ask a professional trainer (which I am NOT) for help!!! it's money well spent!!!
