no suffering no passion

XiaoXin , I hope your situation improves.  I need to moisturize my hands in the winter as well, but find that I need to be careful about getting oils/moisturizer on the piano keys as that makes them slippery and more difficult to play.  I'm playing this piece as well.  I'm not a piano teacher, but one thing that helped for me on this piece is practicing with a metronome which helps me to work on playing the notes more evenly.  Please do take care.

XiaoXin , thank you.  I definitely use moisturizer.  As pianists, I think we need to prioritize the care of our hands.  And if the piano keys do become slippery, what I do is wipe them down with a cloth dampened (but not wet) with rubbing alcohol.

Regarding the use of the metronome, modern technology really helps here.  I had an old wind-up metronome, but it broke.  But instead of buying a new metronome, I just use an app on my cell phone.  I also use an app called Andante which helps log your practice time and it has a built-in metronome.

XiaoXin I was getting these, too, so I have started putting a little lotion on my hands after I wash them (and I wash them a lot, especially when I'm cooking). It has solved the problem. The lotion is just standard hand moisturizer from the drug store.

XiaoXin , thank you for your kind words as well.  I was a little surprised and embarrassed you were watching my videos to learn from as I use them to measure my progress rather than as an example to be followed.  For me, the best example to follow would be the performance of Andras Schiff.  He actually plays it more slowly than many other recordings, like Richter's for example, but he focuses much more on the musicality of his playing rather than speed or as a display of his virtuosity.

Xiao I can hear the beauty of the music behind your practice. 加油！