At some point the Fordow plant will be destroyed by the US or Israel which would effectively end the war. Iran is running out of long range missiles and launchers which took them years to build. They don't have an air force or a navy and don't have capability of invading Israel.
Their houthi, hamas and hezbollah proxies have been neutered. Any further nonsense from them and their oil sites will be next.
There are food shortages and their Tehran population has been dispersed and is now homeless. They have no allies willing to come to their aid.