Either have a big mind or an agile mind, you can't have both.
You are the only being in the universe. You close your eyes. Does light exist? This can be proven by comparing with a universe with no light. To your experience, both are identical, so the existence of light can conclusively be said to be dependent on the existence of an eye. If other parts of the universe detect the light, such as the surface of an asteroid glowing with light, then the two universes may be different. Light will exist only when this difference becomes apparent; when you, as the only being, detect it. The deflection of the light in the lit universe would change its shape, so make it different from the unlit universe, so when the shape difference between the lit and unlit universes becomes apparent, then light will exist, even if your blind self does not recognise the phenomenon as light.
If the two universes are the same then they are as one universe. Of course, we can never compare two universes, and the mechanism of comparison limits our perception.
To the solipsist, the universe is destroyed upon death. If any philosopher believed this, they would not write anything knowing that their writings and all existence would be destroyed upon their death.
Examination of our thoughts is no different from a distant perception of an object, no more certain than gazing upon a wall or book. A mind is both perception and the perceived in unity, each creating the other.