Need some advice on co-witnessing my AR

I need some advice on co-witnessing, and whether I can even do it under my particular circumstances.

I have a flat-top AR with a Mapgul plastic folding BUIS and a Midwest Industries gas block folding front sight. I sighted them in a few months ago, and later on I added a Bushnell TRS-25 red dot, mounted in between the two (of course.) The red dot is going to be my primary sight. I’m using the gun for fun shooting, and maybe home defense if the need really arose. But I am not shipping out to Syria with it.

If I had my druthers, I would like to “co-witness” the iron sights; that is, when I flip them up, I‘d like to see them roughly through the center of the red dot sight when it’s turned off. I do not care if the sights exactly align with the red dot, just so they are roughly in the center of the glass.

My problem is that currently, when I flip them up, they are barely visible through the top of the red dot glass.

Obviously, I could raise the red dot and resolve the issue. But I don’t want do, as I like the cheek weld I have now with it.

So then I thought, “I’ll lower the rear sight aperture and raise up the front sight post, and that will move the whole iron sight picture down, toward the center of the red dot glass.”

But the more I think about it, that makes no sense and won’t work.

BTW, the red dot has a UTG mount that is “semi quick release,” so in a real situation I can still remove it by hand.

What do you guys think? Is there a way to get the iron sights to cowitness with my red dot?

Thanks

Yes, the irons are zeroed (I assume this is also what you mean by "matched."). Basically I bought the irons first, mounted them, and zeroed them. Then later on, I bought the red dot and tried some different risers for it, and ended up with a lower riser. When I was trying different height risers, I never was thinking about cowitnessing (didn't even know what it meant), and just picked the riser that felt best with the red dot. I just figured, "if the red dot ever goes, I'll just release it and go to the irons."
Then I started reading about cowitnessing and thought, "it would be nice if I could see the irons through the red dot, just in case, and then I would never need to release the red dot."
But I think to your point, if that's what I want, I need a higher riser.

Thanks all. I'm going to order the UGT medium and high risers, and will see which it best. I'm pretty sure the medium will suffice.

Two flip ups, the Magpul plastic BUIS in the rear and the MI in the front.