Suppose we're 1 dimensional creatures ((nor much if a stretch of imagination jejeje)) and we're looking at a hyperspace. Or just a sphere if you don't know what that is. We only know one dimension and we only perceive one dimension but we're looking at a thing that exists in ways we can't see or maybe even imagine. We see a point. 1 dimension.
Suppose we're 2 dimensional - then a sphere looks to us like a circle. Likewise if we are 3 dimensions we see 3 dimensions, a sphere. But a hypersphere, an n-dimensional sphere, looks to us like only a 3d sphere I'm 3d, a circle in 2d, and so on. What we perceive depends on limitations imposed on us by the 'space' we ourselves exist in. God Himself is unlimited.
We knew Him as Spirit, as 1-d. He revealed Himself as Father, like 2-d. He revealed Himself as Eternal Son, like 3-d. This doesn't make 3 separate gods but one God - He doesn't change, the limits of our perception change as He broadens our understanding, as He reveals more of His person. The whole scripture is the revelation of God: God revealing Himself to man.
These are all analogies, Jesus isn't a z-axis. But in a sense you can map the trinity to a space with these three axis. Removing one is only removing knowledge of one, it doesn't change His absolute measure, it changes our ability to measure.
It is hard to comprehend because we use the space we exist in to comprehend it: we try to map Him to humanity, and speak in terms of His 'person' as though He is a human. We can't fathom three people being one person - though we van easily understand hearing, seeing and touching a single person, while each of those senses are distinct and each gibes us a distinct set of information from what and how we sense.
He came as a man, in the likeness of a Son, and it is to communicate to us Himself. We perceive Him as if a human, not because He is human or because Him enfleshed different from Him as Spirit, but in the same way, i think, that we receive a phone call. The person isn't a disembodied voice, and they are much.more than the sound they produce, and their voice is not a separate entity from themselves, but it acts as a voice and interacts with the soul of the one speaking as their voice, and without knowledge that the voice was produced by a person, we might think the voice itself is a person, a separate person all self-contained, but we only think that by ignorance of the picture we would see if only we could see 'all'
Hope i am being helpful lol. If it were easy, it would not bear asking and thinking about for thousands of years