Demonstrators have gathered for 70 consecutive weeks in the Melbourne CBD since Israel's ground invasion of Gaza following the Hamas terror attack on October 7, 2023.
The Sunday events have attracted crowds in the tens of thousands and the ire of CBD businesses, Jewish lobby groups and both sides of politics.
With a ceasefire deal between Hamas and Israel in jeopardy of collapse, Australian Palestine Advocacy Network president Nasser Mashni announced the Melbourne rallies would switch from weekly to monthly.
He admitted attendance had "plateaued to between 2000 and 5000" from the highs of 30,000 to 50,000 at the end of 2023, but insisted the move wasn't about crowd numbers.
"It's about what's the best use of time, energy, and that valuable resource that is human power," he told AAP on Wednesday.
The next Melbourne protest is slated for Sunday and another on March 23.
From that point, the rallies will become monthly unless Israel escalates the conflict, which would trigger snap actions.
The march route from the State Library to the steps of Victorian parliament will not change.
Mr Mashni denied organisers had backed down following calls from Premier Jacinta Allan, the state opposition and Victorian Chamber of Commerce and Industry to move or end the weekly rallies.
"Public sentiment is in our favour. Overwhelmingly, wherever we go, we are told to keep it up," he said.
"There might be rallies, there might be vigils, there may be sittings that we will call actions as and when is necessary based on the realities of what's happening in Gaza."
A spate of anti-Semitic incidents have been recorded in Australia, including the fire bombing of Melbourne's Adas Israel Synagogue in early December and a suspected explosive terror plot foiled in Dural on Sydney's northwest in late January.
Mr Mashni suggested the politicisation of the movement and weaponisation of anti-Semitism was "shameful", calling for the premier and state police force to address "rampant anti-Palestinian racism".
A spokeswoman for Victoria Police said the force would continue to engage with the organisers about their plans and to ensure the ongoing community safety.
People had a right to protest but also a responsibility to do so safely, Public and Active Transport Minister Gabrielle Williams said.
"The behaviour has generally been good, but I'm sure many Victorians who have sought to get in and out of the city at those times will be relieved by the minimisation of disruption," she told reporters.
Victorian Chamber of Commerce and Industry chief executive Paul Guerra said the move was a positive step, but called on the state government to implement clear and enforceable measures to prevent future prolonged disruptions.
"The cost of policing these protests is running into the tens of millions of dollars - money that should be spent to help Victorians in a time of economic uncertainty," he said.
Ms Allan has been resistant to introducing a permit system for protests, similar to one that operates in NSW.
In October, the NSW opposition pitched user-pays policing on all repeat protests after Premier Chris Minns said the weekly pro-Palestine rallies had cost $5 million to that point.Â
More rallies are planned for Canberra (February 14), Adelaide (February 16) and Sydney (March 2) in coming weeks.
It comes as Israel prepares to resume fighting if Hamas does not free more hostages after the militant group accused the Jewish state of violating the ceasefire agreement.
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