Firstly, he has a timeline for removing most restrictions, so there should be progress there, and secondly, why should he have to promise that? In case conditions change, say a much more deadly form of COVID, those restrictions may be needed. That demand seems unreasonable.
And the truckers and everyone else on their side feels that leaving the emergency powers in the hands of the government is unreasonable. Thus why the two respective sides are at an impasse.
The last time he removed the restrictions, he managed to create the worst Covid in Canada and had to apologize.