Is there a way for me change back into a half-Gryvian?

[BoneTeeth]

I got to Lessau and he said the microsurgeons would be able to turn be back if I wanted but I have no idea how to do that. I'm still pretty early in the game, haven't completed a single mission yet but I want to use the Ewe pill to be a sheep or a goat to keep warm. I just don't want to be it forever, and the Uthra+ is only for fixing genitals. Is there a pill or something that I could take to turn back to "normal"?

 

[Theron]

Judicious use of DracoGuard and Terran Treat. There's also the Thermal Pack (despite the flavor text, I'm pretty sure it can handle snowstorms).

 

[Autobass]

If you want the warmth without having to juggle TFs, either heat packs like Theron suggested or cold resistant gear. Heat/Arctic Warfare belt are also an option if you don't mind the low shield numbers.