I agree with everybody who say practice on different pianos. To be practical, many people have only 1 piano at home. Where would you find another piano to play? You often find old pianos in churches. You can make arrangements to go there for practice on certain days of the week. There are local music studios with a piano you can practice.
The only way to get used to the feel of the Petrof piano at the studio you mentioned is to actually spend time on it. Not sure if that particular piano is available during the week for at least an hour. My teacher uses a digital Yamaha Clavinova for teaching. The conservatory where my lessons are held also has upright & grand pianos including Yamaha, Kawai, Steinway, Boston available to students when practice rooms are not used for lessons.
A few years ago I practiced music with a strings ensemble at a community center. There are Yamaha upright pianos for lessons during the week. I use a digital at home with weighted keys. I found the keys of the upright rather heavy at first. I could play my pieces but the volume out of the strong fingers came out more. Then I realized hitting the keys properly you should use no finger effort but the weight of the arm to press the keys. Keep your hands loose and let your hand drop into the keys with the weight of the arm. Using a lot of finger effort is something many beginners have trouble with.
Practice dropping your hand into the keys with the weight of the arm doing all the pushing. Keep your hands totally loose and relaxed. After a while, you'd find pianos with heavy keys easier to play.