Are there any successful cases of forehead filler when lying down?

I have a wide, reclining forehead, but no matter how much information I searched for filler information, I only found success stories of partially sunken foreheads, and I couldn't find anything that made my forehead, which is completely flat, like mine. ㅠㅠ
 I don't want a convex forehead, I just want to raise the angle of my forehead like the blue line in the picture, but it's like this. How many cc of filler should I put in? No, I wonder if it can be solved with filler in the first place.. I like things that look natural, and I want to put in only 3cc because I'm afraid that if I put too much, it will sag later, but I guess that's not an option for lying forehead??
 
If you have a reclining forehead like mine and regret or are satisfied with the filler, please leave a review ㅠㅠㅠ Post here with the feeling of grasping at straws.