Um... this is immenency. Every day is any day. There is no difference.
If you think preparing for a future Kingdom that is some years away is the same as preparing for a Kingdom that could come today, then you just don't recognize the argument.
Let me give you an illustration. Let's say I'm heir to a substantial amount of money. Well, I know both my parents will not be dead for a few years because of the likelihood of their living that long. But I live as if I will eventually inherit this money. It is clearly not the same as if I know both parents are going to get blown up any moment caught up in a warzone.
We know we're going to inherit Christ's Kingdom some years off in the future, and we live with that in mind, storing up spiritual treasures for that future day. And we do this *every day,* knowing that every day counts in the matter of storing up treasures.
However, this is not the same thing as expecting Christ's Kingdom to come *at any moment!* This would raise anxiety and confusion, because the circumstances do not dictate this.
On the contrary, circumstances dictate that much more needs to be done in our lives and ministries, in preparation for the Kingdom. And prophecy dictates that Antichrist must come first, consolidating an age-long process of religious growth followed by spiritual decline.
The time is appointed, true. But since we do not know when that is, and since we are told to await His coming, we must believe that He could come at a time we do not know. Could be today.
Could be today!
Not at all. Our lack of knowledge about the precise day and hour of Christ's coming does not cause us to expect him today! It is the environment of the final Antichrist that will awaken us to an imminent expectation, not just an ignorance of knowing the precise day!
While it is true we don't know the precise day, this isn't for the purpose of expecting him every day! On the contrary, we aren't told the "times and the seasons" so that we live by every word of God, rather than by some prescient gift. We are to live by walking in the Spirit, doing what we must do today, rather than planning everything alone, as if we are in charge of the future.