The government's panel on constitutional amendments has vowed to press ahead with the bill to rewrite the charter, which could trigger a new wave of political unrest.
The bill seeks to amend Section 291 of the constitution to make way for the establishment of a drafting assembly to rewrite entirely the 2007 charter.
Moves to amend Section 291 stopped on July 13 after opponents asked the Constitutional Court to rule whether the proposed changes were part of a plan to overthrow the monarchy.
At that point, the Pheu Thai-led government backed away from deliberation of the bill, which had reached its third and final reading in the House.
Pokin Polakul, chairman of the panel, said the committee had adopted a four-point conclusion regarding the government's efforts to amend the constitution.
First, the third and final reading of the constitutional amendment bill must resume, he said. MPs would be neglecting their duty if the bill was left untouched, Mr Pokin said.
The government shelved the reading after the court ruled the bill should be suspended.
The court said a public referendum should be held on the move to rewrite Section 291, but Mr Pokin's panel has rejected that idea.
Pheu Thai Party MP for Yasothon Peerapan Palusuk, also a member of the charter amendment panel, said the third reading vote should take place between January and February.
Mr Pokin said the second point agreed by members was that a campaign to publicise the government's desire to amend the constitution would be held, starting next Monday _ Constitution Day and the 80th anniversary of Thailand's first constitution.
The campaign would run for one or two months.
A committee would follow up on the campaign as recommended by the Truth for Reconciliation Commission. PM's Office permanent secretary Thongthong Chandarangsu was put in charge.
Third, the panel agreed the coalition would arrange for a referendum to gauge public opinion on the new draft constitution after it is written by the charter writers, Mr Pokin said.
Fourth, the coalition would propose changes section by section. This campaign would begin right after the bill was approved by the House, he said.