is there a method to move my mesh at the bottom in the same way I can with the top mesh? like shrink the top while moving all the subdivided segments aswell?
(I want to shape my bottom mesh in the same way as the top)
The “shear” command should be what you’re looking for.
Select all the vertices except those in the left most row, make the bottom right vertex the active vertex and change selection to active. The shortcut for shear should be Shift+ctrl+alt+S if i remember correctly.
The loop tools addon “space” command should also help by evenly spacing the vertices after shearing.
I would also use the Shear tool, except only select the right row and enable the Proportional Editing option so that it affects the next rows