Israel's future actions and claims will be based on their intelligence. So, consider how they likely react to the scenario that everything was obliterated vs it's a three month set back. I think it would be different.
Under the former, the US and Israeli attacks between them, killed Iranian generals and scientists and damaged the facilities. Only time will tell if any of them were irreplaceable in their jobs. It may be that losing those people will have more impact than the physical damage.
However, we now enter a period where Iran, in all likelihood will work to restore their program and they could make the decision to go for a bomb. A year from now we could be in a worse place. If Israel thinks that after all the attacks, Iran is only 3 months further from getting a bomb than before how long will they wait before attacking agai
For Iran, the failure of 12 bunker bombs to do more damage than they did might be a victory for them creating the facility in the mountain. Though Iran was the weakest of the three countries, the regime likely will use the fact that they survived with their program "intact" to declare a victory. One thing of great pride to Iran is that they were never conquered or occupied. The pipe dreams of some of the Israeli media and neocons here that this results in regime change are just that.