NATO is outproducing Russia in drones (something that should have happened 2 years ago) and I don't see Russia having the means to
catch up any more. The double whammy for Russia is that they have a larger air space to protect. Ukraine is now averaging 250 long distance
drones a day (some days have seen 1000+) into Russia, while Russia has not managed to cross 200/day in any month. Ukrainian short range drones
are now 500,000 /month vs 200-250,000 for Russia. Advancing is very difficult with the defenders having a `drone wall'. My sense is in 3-4 months time meaningful advances will be very costly and will not be attempted. Russia has a small window to take whatever remaining territory it needs.
Attacks on Russian infrastructure, will invite the same on Ukrainian infra - glide bombs substituting for more drones.