Olá @mprelovska! Personally, I’m not familiar with Portuguese language exams and I guess there’s probably no better source of info than the people who already took them, but I’d risk saying that if you understand PP’s medium-level podcasts that well, you should be good to go 
This website lists all that they expect you to have mastered for a B1 certification (they also have these detailed lists for all other levels/types of exam): DEPLE - Diploma Elementar de Português Língua Estrangeira
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