You see a point, otherwise nothing, no thing. You see that everything is matter, luminous or dark. Matter is a thing, things are surrounded by nothing.
You further investigate in what things exist.

You can call it a point, a principle, that in which everything is, that in which everything is created, the tinge, the midline.

You don't know who is watching, sensing, asking, listening, talking - who is inside the shell.
You ask if there is a wall here.

Imagine the fetus in the womb and the wall there.

You see the wall now: White, soft and wet like jelly, meaningful and connecting. You sense, that the shell is empty, there is only the question, the boundaries are now fluid, control is gone, and you know that there is always one action, which is the better one to choose in this moment.
You have let go of control like the boats in a harbour, that have their moorings cut and then drift out through the harbour entrance and further out to sea, each with their own arbitrary course. You've let go of control simply by not holding on.

Yes, why hold on to control, when everything is changing, everything is transitioning to something new and eternally fresh?

"Is there at least a now, and if so, how long is it?"

In between what was, and what this is being transformed into.

"Then nothing is here, not even a point? Or does the present feel like matter on par with the past and future?"

The present cannot be grasped or held, it is always here - as in all ways.