It is very difficult to predict which direction Russia has a higher priority now ...
No is not. The gas and iron ore and industry of the Donbas. Encircling the Ukranian army south of Izum, taking Mariupol and, if they observe weakness, trying a push for Odessa.
It is difficult to say that Russia’s advance in the Donbas is very slow, because there Russia is opposed by the most combat-ready grouping of the Armed Forces of Ukraine, which is very well entrenched there. There seem to be more Terodefense militias in the south, who are now having a very hard time against the regular army. On the other hand, armored vehicles with the letter O from the central military district are increasingly visible in the front-line chronicle, and the letters B and Z now look like rotations or regroupings. Shelling in the Donbass is more like "harassing" fire to prevent the Armed Forces from regrouping than to prepare for a decisive offensive.