Ok first off let's keep this professional.

Something has come up where I need to shave my pubic hair and keep it shaved. I got a safety razor designated for just this (no way I'm using a straight).

I've been using creamo cream with ok results. I shave here in the shower.

I'm wondering about using a small brush and actually building lather just like my face but I'm wondering if being in the shower with water running down my back plus not having a sink that I just add a small amount of water to brush will make getting a good lather almost impossible.

A good lather is my biggest concern but other tips are also welcome.