Spurs had hoped the 26-year-old French defender, who underwent knee surgery in August, would make a full recovery by January.
But assistant manager Steffen Freund said he was now hopeful Kaboul would be fit by "mid or end of February".
"He's on a six-week programme from the medical staff and starting to work now with the fitness coaches," said Freund.
"It's difficult to say now which game he will be back," added Freund.
"He has a lot of leadership qualities and we are waiting to have him back as quickly as possible."