Remember, collapse rarely looks imminent. Everything appears pretty normal until it's all of a sudden not normal anymore.
Another sign for those who look for such things:
Based on an analysis of satellite images of storage bases and repair plants, the researchers concluded that the rate of Russian tank restoration has dropped by 3.5-4 times compared to 2022
militarnyi.com
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The article goes into more detail, but the TLDR is that all of the relatively to moderately easy stuff to repair from their stockpiles are gone and the refurbs are taking longer and longer to get ready for the field. Current restoration levels appear to be about 50% of what would be necessary to maintain the current rate of losses.