A lot of the land that Putin has been holding and is planning to annex is being taken back by Ukraine. They've reclaimed the most land since the invasion began.
The mobilization is fucking them over, as it basically finally admitted to the Russian people that yes, we are invading Ukraine. Obviously a lot of normal people are going to be very against that. That is to be expected, but it hasn't really helped them any, making it not worthwhile.
There's been reports of more Russian soldiers surrendering en masse, including many who haven't even been drafted yet, contacting them about the possibility of immediate surrender.