Spokesman for Parliament Moloto Mothapo said yesterday Mbete would still consult with Deputy President Cyril Ramaphosa and chief whips of the parties represented in Parliament.
Mbete was locked in meetings with the ANC Top Six in Johannesburg before another meeting of the National Working Committee of the party to discuss the Cabinet reshuffle.
She flew in on Sunday after she cut short her trip to Bangladesh after the opposition called for the motion of no confidence against Zuma.
“She said she does not envisage that consultation will take too long,” said Mothapo.
Mbete had indicated earlier the decision could be made within a week.
The ANC has been left divided by Zuma’s decision to axe Finance Minister Pravin Gordhan and his deputy Mcebisi Jonas.
Yesterday pressure continued to mount on Zuma with the Centre for Development and Enterprise saying it condemned his decision to fire Gordhan and Jonas.
“This is clearly an assault on the National Treasury with the goal of making possible further looting of public resources,” said the centre.
“This action and the manner in which it was done threatens to inflict enormous damage on South Africa’s economy and governance.”