I will admit that I had forgotten much of what I knew as truth in the past 4-6 months, then mania took over. However, Now that I have recovered I'm back on track with trying to stay in the present moment, as much as possible. The true test will be when I go back to work next week.
One thing you said struck me as odd. You said "without time we cannot exist", but that is not true. We exist "NOW" in the "present moment", not tomorrow or next week, you exist in this moment. And when tomorrow comes you will again be in the "present moment", because all you ever have is the present moment- time is an illusion.
Time is of the mind (the ego)...your mind want you to worry about the future and relive problems of the past. Yes, time is needed for daily events, such as cooking, being at work on time, some planning, etc, however what I speak about is the mind (ego) creating suffering in your life by being in the past or future, not living for today or better yet this moment.
Eckhart Tolle is a true spiritual teacher. He has written "The power of Now" and "New Earth".
You can watch him on Youtube also, here is a 7 minute interview: