Further restrictions will be reimposed "sooner than originally planned" after the recent spike in Covid-19 cases.
Green Party leader Eamon Ryan confirmed that the Government will be meeting today and tomorrow before deciding on finer details.
The Minister did however say that the hospitality sector as well as the household gathering numbers will see new restrictions.
Speaking on RTE's Morning Ireland, Mr Ryan said: "The Taoiseach was out saying last week that because of the rising numbers we were looking at some of the dates, an earlier closing of hospitality, a reduction in the number of households who could visit the house.
"It was only the last three days really that we've seen the recent spike, that would call us to change timelines.
"We're looking with concern at the rising numbers. There is likely to be further restrictions yes and sooner than originally planned.
"I think their in a variety of different measures there is likely to be change."
It comes after 764 more people tested positive for coronavirus in Ireland on Sunday.
Speaking on Sunday's figures, Dr Holohan suggested that anyone who has been socialising in recent days and weeks should consider cancelling their Christmas plans.
The Chief Medical Officer said: “Every indicator of disease severity is moving in the wrong direction, more rapidly than we had anticipated. We have particularly strong concerns about the prospect of inter-generational mixing around the festive season. On 11th December the 7-day incidence rate for people aged 19-44 was 106 per 100,000 population, by yesterday this rate had more than doubled to 217 per 100,000.
"If these younger people come into contact with their loved ones over the age of 65, we could see a spike in infections in this more vulnerable group. This would lead to very a serious pattern of disease, hospitalisations, ICU admissions and unnecessary deaths.
“If you have been socialising in the past few weeks or over this weekend, consider your Christmas plans carefully. Is it responsible to meet with your family over 65 later this week, if you have not kept your contacts low? Should you cancel your plans?
"We have the very real prospect of COVID-19 vaccines on the horizon. Ensure that your loved ones stay alive to receive them, by keeping your distance from them if you have not restricted your movements to this point.
"As difficult as it may seem, staying away from older family this Christmas will protect them - and it would be an exceptional sacrifice made for the common good.”
