I tend to disagree on Russia being blind as far as intelligence.
They have satellites and reconnaissance drones and listening posts that intercept communications. They also have websites that offer rewards to Ukraine citizens who give them information on Ukranians troop movements and locations.
But where drones have had a strength is in how Russia conducts warfare....when they send a Batalion they send everything....all ammo and equipment. They don't resupply. Which creates huge stockpiles of munitions. The Ukranians have exploited this with Nothing more than a few grenades from toys.
Where this is definitely exploitable Russia has destroyed several power plants....and everything is running off of generators and power supplies. So it's time for the new power supplies that are fuel based hydrogen ion electrical generators....very quiet and no exhaust....also a bit colder than regular generators....not completely cold but not as high of heat that an engine would cause.
(Everyone wants to field test their newest toys on an active battle field)
Ukraine needs to hold out for 6 more months....if they can do that....the sanctions will do the rest. Putin will then be hard pressed to keep himself in power. If he loses his seat the ones who could replace him are worse than he is. No good options there.
The only way this ends is if Russia can claim a win of some sort...obviously with Ukraine in their rearview mirror. Because if Russia wins all of Ukraine....Poland is next...maybe Finland or Slovakia...there's no stopping until they take over Europe.
Yes Russia certainly has satellites and recon drones - however in far fewer numbers and far less capable then those we have in the West. It is obvious that Russian wheel/track-based field electronic and other data collecting capabilities are near to zero.
The concept of BTG's is to operate independently of being resupplied for a period of 2-4 days. (for so called break-through operations and rapid territory gains). IMO Russia has lost approx. 50% of it's initial deployed BTG's. There are since July/August, no recognizable BTG related actions on the Russian side. But simply ill trained, ill equipped and ill motivated infantry grunts sitting out trench and urban warfare. Actual infantry assaults are in vast majority conducted predominantly by Wagner-troops, left overs of the Russian elite forces, and specialized (urban warfare experienced) forces of the Donbas/Luhansk Militia. - the Russian composition of troops might very well change for a certain period starting off from February/March.
That there are huge ammo stores - (mostly dispersed after the initial HIMARS deployment) - and broken up into smaller units/depots is simply a necessity in regards to keeping the still massive Russian artillery assortment running.
Russia has no real proven success at all in regards to having taken out or decimated e.g. Ukraine's artillery capability, weapon system collection points or e.g. ammo depots- because they are clearly 'blind" in regards to this issue - As you surely are aware, one doesn't need satellite input or state of the art recon data to target a power-plant or other large infrastructure objects - a simple map (even ten years old) is good enough to fire missiles that are nowhere close to the precision and guidance systems of Western missiles.
Six month? .... what makes you say that? all that promised stuff (e.g. tanks) and in the comming month further granted/extended additional equipment (e.g. aircraft) isn't going to be available in respective numbers before autumn/winter this year - whilst in the same time Russia is also upping it's efforts.
Taking the Russian military mindset and their technical capabilities into account, this war will last as long as Putin finds a way to recruit cannon-fodder - as such for many years to come. Putin is simply betting on a collapse of Western support - e.g. change of governments, and/or a collapse of Ukraine's internal political stability in given time, to achieve a gain in this ridiculous war.
Even if Russia should occupy half or all of Ukraine - they will never attack a NATO member - (That is why Putin opted to attack Ukraine on Feb. 2022 in the first place - knowing very well that once Ukraine is a NATO member he couldn't do anything about that). Further more the Ukraine war has clearly demonstrated to them and everyone else, that Russia is no match at all to NATO in a direct confrontation. they never had been - not even during the cold-war and especially not from 1970 onwards.
Also I am convinced that if Ukraine should fail militarily to secure at least 50% of it's territory - NATO will opt for a direct involvement. The present US administration has invested far too much already into this ridiculous war, trying to destroy Russia's economy and present political structure - then to just simply back away and subsequently loosing/endangering it's necessary support by it's "allies", towards their ultimate goal "China".