Hi MrBubbles71!
I know exactly how you feel! I've always been an inverted Y gamer, and this game forced me to get used to the other way. I was pretty clumsy for a long time. There have also been requests for being able to customize the controls, so getting an invert Y-axis button will probably come with that update. Check out the Trello page HERE to keep up to date on the game's progress. You'll find "Input Mapping" under the Issues list, but the work on it is currently suspended.
Thanks for the suggestion and Happy Smithing!