They kind of have - they said they aim to vaccinate the top 4 groups by mid Feb, then 2-3 weeks later they plan to start lifting restrictions. By April they aim to have vaccinated the remaining priority groups.
If it helps you to know that the legislation governing the lockdown has an end date of 31 March and then needs to be voted back in again
However, as other posters have said it may be less stressful to not have a big expectations as dates slip and situations change. There is a story about vietnamese POW which the Stockdale paradox is based on, and this tells us that those people who confront the brutal reality of a situation are move likely to thrive than those who hold an optimistic view that they are pinning their hopes on:
Collins told the story of Admiral James Stockdale who was a POW during the Vietnam War. Collins notes, “It just seemed so bleak—the uncertainty of his fate, the brutality of his captors, and so forth…how on earth did he deal with it…?”
When Collins asked that very question directly to Stockdale, he replied, “I never doubted not only that I would get out, but also that I would prevail in the end and turn the experience into the defining event of my life, which, in retrospect, I would not trade.”
Collins followed with another question: “Who didn’t make it out?”
“The optimists. Oh, they were the ones who said, ‘We’re going to be out by Christmas.’ And Christmas would come, and Christmas would go. Then they’d say, ‘We’re going to be out by Easter.’ And Easter would come, and Easter would go. And then Thanksgiving, and then it would be Christmas again. And they died of a broken heart….
This is a very important lesson. You must never confuse faith that you will prevail in the end—which you can never afford to lose —with the discipline to confront the most brutal facts of your current reality, whatever they might be.”