I don't think that's true? SVB was insolvent because they had to sell bonds at a massive loss in order to cover illiquidity that was a problem due to the bank run.
What is your source for this? From everything I have read, the first point at which they were clearly insolvent was what I mentioned previously, when they sold a huge swath of bonds at a massive loss at or around March 8th 2023, which was less than two weeks ago.
