I don't think they can replenish anything in two weeks, correct me if I am wrong.
Because it's not about moving supplies around, they can do this with or without a ceasefire. You can't make Air defense in two weeks can you? This is why I don't get the hysteria over relinquishing leverage, unless I am mistaken
2 weeks one week, whatever is agreeable.
It would potentially allow the Americans or Israeli to come up with some other strategy and that's a risk, and if that happens then we go back to the escalation spiral.
Also if you think about it, if Iran does negotiate then the expectation in the west will be this war ends, that could create favorable internal pressure in the West, for Iran
Invariably Israel will try and sabotage the peace talks in any case and trump will face pressure for allowing this to happen