How to practice short studies

[Daniel_piano]

Hello,
I have followed Bernhard principles with great interest and they helped me a lot
Now, I've noticed that all these principles apply well to sonatas, etudes, concertos, inventions, fugue, impromptu... I mean all those long musical pieces that have many repeated patterns, central sections and so on
But there also (unfortunately) the less musical, short studies
Now, I don't want to practice or learn them but I HAVE TO, so it's no a matter of choice
I've also noticed that it's far more easy to me to learn a musical long piece such as a sonata than a less musical, short studies such as Czerny ones
I don't why 
I've made a scan of a study I'm trying to learn
I would like your advices on how such study should be learned, how big should be the chunks which I divide the piece in, which tricks or methods should I use in different chunck
I'm quite sure that the way to practice a sonata and the way to practice such studies are quite different, for whatever reason

Here's the piece: https://youngdonald.altervista.org/immagini/study43.jpg

Thanks a lot for your help
Daniel