Vertical Slab Model

Before you call me a copycat for making vertical slabs, nope--my mod has a lot to offer than just some silly vertical slabs. (wait its not promoting time yet)

So, as you can see, using a standard vertical slab model from Blockbench and turning the 'Y axis rotation (S/W/N/E) Rotation from player side' option, the top and bottom textures also changes depending on how you placed it. Now, I don't want the top and bottom textures to rotate, so if anyone could help me, feel free to reply to this forum post. If there's already a same forum, you can also link it here. Thank you very much!

Note: if anyone know how to make a double slab, you can help me :) thanks!!!