I don't know what you actually mean by "give up". What does that mean? This is not fist-fight between two person where one says I give up. This is two distant countries lobbing missiles over a distance of a thosuands of KMs. If the mood in the country is that we are being attacked and we need to fight, what does even mean "give up"? Ok we won't fight anymore? Is that even possible?If Russia took Ukraine seriously on day 1, we would be seeing the same things.
Shock and awe, giving Ukraine very little time to adapt under fire.
If Iran was a normal country I would say yes, they can replace everyone who died, and strategic depth means the fight evens out towards Iran. But we honestly don't know how much of their capabilities they can keep up after a week or more of bombing.
Unfortunately, don't think Iranians are mentally prepared for a real attritional war either. It'll be easy to say they can use the attack to rally around the flag, mobilize and gear up for a long fight and rush for the bomb but there's a chance they'll just fold and give up. Same way Ukraine would have collapsed within a week if Zelensky fled the capital.
Iran in the current government system cannot by design "give up". There will have to be a coup and I don't think its remotely on the cards. Even if all of Iran's nuke plants are destroyed Iran will simply rebuild. Israel also doesn't have unlimited tolerance for pain either. They also don't have unlimited munitions or planes. Their pilots will be tired, their planes will need maintenance. Their bases are getting bombed by Iranian missiles.
There will be a mutual ceasefire sometime soon. It could come in days, weeks or months. When all dust settles, there will be a counting of how much damage Iran caused and how much Israel caused. If Iran can cause even 1/10th of what Israel has caused, that will be a victory.