No decisions have been made in relation to what restrictions will be eased from April 5, the Taoiseach has said.
Micheal Martin warned that the situation in relation to the virus was "very fragile".
It comes as a meeting of the National Public Health Emergency Team (NPHET) planned for Thursday was postponed until next week.
Health experts were due to meet this week to decide whether some restrictions could be lifted.
The meeting had been put back to allow for further data to be analysed before NPHET gave its advice to Government on reopening dates.
The Cabinet is expected to meet on Tuesday to rubber-stamp any changes to current restrictions.
Mr Martin told the Dail: "The situation in relation to the virus is very fragile.
"We have, in the last seven days, 3,800 cases.
"The sacrifices that people have made has had an impact on getting case numbers dramatically down from January figures.
"The Level 5 restrictions have worked effectively to bring numbers down very, very significantly from where they were.
"But the numbers are still high in one way too, and the fundamental reason for that is we're dealing with a variant that is highly transmissible and more dangerous.
"No decision has been made in relation to the post-April 5 situation.
"We've been engaging with public health advice and research in relation to this.
"We do acknowledge the enormous stress and strain and difficulties the current lockdown is imposing on people, in terms of personal restrictions, on their freedom and their liberties and not meeting up with others.
"We do not want to go back to a situation where we have 2,000 people in hospital."
Opposition leader Mary Lou McDonald said the public were "fed up and angry" living through three months of Level 5 restrictions.
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