Impossible to Level Terrain?

[DarbyDays]

I've been working on leveling a particularly nasty ridge patch out for a few days. Managed to get most of it but the peak.
I'm currently stuck and would like a ground leveling experts confirmation if this is possible or not.

A - Cannot dig down/add dirt due to higher ridge (B) beside it
B - Cannot add dirt due to A/E ridges not allowing higher slope for more dirt
C/D - Unable to add dirt due to ridge facing wrong direction, not that it matters since that lime prevents it anyways
E - Same problem as A, only direction is wrong for the corner to be dug

I cannot get a slope high enough for that top part due to slope limitations of the side ridges, is this possible or do I now just live with a massive mound in my property?
Any insight is appreciated, thanks.

[Nikixos]

use shift to add more dirt on one corner of the square here and then control to level up the entire area

[ZoddAlmighty]

Thats pretty simple,just keep adding dirt untill the cliff is gone .
Try it from the side of the cliff that you posted on the first picture. When you have it as hill and not a cliff then just use ctrl+dig to level it up all the way down.

[DarbyDays]

I've been using the Shift drop now to some success, I was previously only using ctrl. I'm in the process of making the hill larger. Thanks for the tips so far, I'll let you know if I manage to tame this hill, kinda need my dirt back now that I have a massive hole in my property .

[Silverfish]

if u cant reach the place to suppor, shift support the reachable corner, then ctrl support to raise-level all tile,
go from the B position with shift-supporting and add more to get to the top, it doents look very hard

btw got any grubs for sale?