Putin ruled out voluntary mobilization multiple times, which means that Russia is at a manpower disadvantage and cannot attack(the "voluntary" mobilization story is developing, but anyway Russia probably doesn't want to try to attack in winter). The mobilized Ukrainian soldiers are out of the civilian economy while they are deployed, so cannot contribute. Taking out power also increases civilian migration pressures. Seems like Putin is increasingly going to force NATO/Europe/US to support Ukraine with actual food/electricity/water/etc instead of loan forgiveness and weapons, which will probably be tough in winter.
The above strategy is obviously some sort of war crime, but question is what sort of response will come from US/NATO/Europe that would stop Putin from this pivot(if it is indeed ocurring).