There's an idea that this phase is an attempt to get Russia to commit their reserves then to attack at the weakest point. I hope that it is true.
https://twitter.com/Tendar/status/1668642065343733760
"The bulk of the Ukrainian army still hasn’t engaged the Russian invaders in the south. 12 brigades, 3000 armored vehicles of all types and an undisclosed amount of troops waiting. The largest military operation of the European continent since 1945."