Thanks for your advices a lot
nope, it is most of the time living on the balcony where there is a lot of sun during the day. I just repotted it today, but taking the whole soil ball as it was in the previous pot so it should not do any harm probably.
I bough a fetilizer today, but maximum I could found was NPK 476(it it mostly for catuses). But I also took another one that is only phosphor based(17% of P2O5). I would send a links but those are only in Slovak/Czech so they would not mean much. I will try to combine them both together very carefully
this is how it looks together with my other plants on the balcony now( btw I live in Slovakia)