Theresa May is facing growing calls to say she would delay Brexit rather than leave the EU if no deal is in place by the end of March.
A new plan from some Tory MPs suggests ministers postpone Brexit until 23 May “to conclude negotiations”.
It is being suggested as an alternative to cross-party proposals which would see MPs take control of the process.
Dutch PM Mark Rutte warned Mrs May the UK was “sleepwalking into a no-deal scenario” and needed to “wake up”.
The pair met at a summit in Egypt, as she presses EU leaders for more concessions to her deal.
Irish Taoiseach Leo Varadkar described a no-deal Brexit as a “lose-lose-lose scenario for everyone”, but he told reporters ahead of a meeting with Mrs May that he thought the outcome was unlikely.