Piano Forum

Hello fellow pianists (or ones attempeting to be one like myself), Im curious because ive now been given the burden of far too much free time, now being off school. I want to pick up some studies to develop technique. Last summer i went through almost all of the hanon book everyday to develop my technique, and i am tempted to restart this. But i want opinions if i should start this again, (because for whatever reason ive lost the ability to do scales to a competent degree) or start learning some bach fugues ( not necessarily the well tempered clavier but rather partitas- as these are some of my favourite works in piano literature) Or some chopin etudes or perhaps rachmaninoff etudes. For context on what ive played, ive performed liszt etude 10, ballade 1 and soon scriabins 4th. im learning, dante sonata and beethoven op 31 no3(sonata 18) whilst still perfecting the aforementioned works for a concert in september.  If i do the etudes, which should i start off with, im thinking maybe i should work and one from each set ive mentioned- one movement from bach partita, one etude of chopin and one etude of rachmaninoff. But would it be best to take on so much work at once?