The Justice Minister Helen McEntee says the Government 'will act' on recommendations from the National Public Health Emergency Team (NPHET).
The group is meeting on Thursday morning to make a recommendation to Government.
Health officials are worried about the spread of COVID-19 in a number of counties, and Dublin in particular.
It is expected NPHET will say the capital should be moved fully up to level three restrictions.
People will be told to work from home unless absolutely necessary.
This would also mean people would not be allowed to leave the county except for essential purposes.
Capacity at weddings and funerals would be limited to 25 people, and religious services like mass should move online.
Minister McEntee told Newstalk Breakfast: "I think it's very clear, unfortunately, having seen the figures from last week and continuing into this week that we are moving in a direction that we don't want to be moving in - particularly in Dublin - the numbers continue to increase and this really is very worrying for everybody".
"The recommendations that NPHET made for Dublin previously we have implemented those.
"What they asked for were more stringent measures than what was being placed on the rest of the country.
"And we made that clear on Tuesday: that while the whole country was at level two, there would be additional measures based on the recommendations from NPHET for Dublin specifically.
"If NPHET recommend that Dublin need to move to level three then that's something that we have to absolutely consider and take on-board.
"This is why we have this new roadmap, this six month plan".
She added: "We need to wait and see what comes out of NPHET, and certainly whatever recommendations - if they make any - we will act on those".
Asked about whether this will mean people due to get married this weekend will have to cut their guest list, she said: "This issue is something that we have always been very conscious of and throughout the last number of weeks in particular we have made, I suppose, special exemptions for [sic] weddings are concerned because of those very reasons that you've just outlined.
"We're asking people to be conscious of where we are, the level that we are potentially moving to - or that Dublin is potentially moving to - but I think until that happens, I don't think I should be making suggestions or telling somebody if they have a wedding this weekend that it can't go ahead.
"I think we need to wait and see what the recommendations are".