The people of Iran are extremely brave, but I don't see them completing a revolution quickly or without huge human cost, unless there is significant foreign intervention and pressure.
Even if the regular army of Iran turns against the mullahs and the IRGC, they are likely to be outfought. The IRGC controls around 40% of Iran's economy and is significantly better armed and trained.
The US is not going to put boots on the ground, so I think the strategy will be to threaten IRGC regional commanders / sites with bombs if they go too far. In parallel, US and Israel will execute plans to attack nuclear infrastructure again if it is back on track, whilst also pursuing Houthis and Hezbolah.