I saw it mentioned somewhere about 2 days ago that Kiev was sending some part of its troops and equipment that were reserved to defend Kiev, to the front lines.

If they didn't the line would simply collapse.

If true, Kiev may be vulnerable to a renewed attack from the North.

I wonder what the plan will be with the 300,000 new troops?
I was thimking they might simply replace some of the trained Russian troops in other parts of Russia where nothing is happening, where they can do their training. Meanwhile the troops they replace can then move to Ukraine immediately, as they are already trained?

Russia needs to press the attack now to finish this conflict for the good of all involved.