Blender – Edge Flow Control

Select edges that you wish to remove

Press X and select Edge Collapse

Now select the edge from the middle and press X & Dissolve Edges

So right now you have a quad face.

This way we reduced the number of faces & our topology is still allright.

Select vertex in the middle of the square.

And press V to detach the vertex.
Move it a bit down.

Move another vertex up.

And press Alt+click to select edge loop.

Press F to Fill the quad.

Right now we created flow change.

At the end it should allow us to create panel.

Select the edge, of the quad.

Press V to detach the edge  &
Move the edge to the right.

Then select those two edges, and press F to fill them.

Then select the top of filled edge & again press F & press F & Repeat until you will reach the top of the thing.

Then just make an edge loop in the middle.

Thanks by this right now you have a nice and clear quad in the middle.