I would not recommend the grease route....may work for some, but I have a hard time believing some one prone to airsickness would be helped by this(other than the very occasional exception to the rule.)
I was fortunate enough to never get sick in the -34...thank god. I did have a couple of buddies that got sick on about their first 5 rides AND every single PA hop. I recommended peanut butter toast (which I ate religiously for my first two weeks of flying) and HYDRATE like a muthafVcka. They both said they noticed a big improvement.
It seems that the majority of people seem to have trouble down low( in the pattern, low work) and IMHO it is the combination of nerves, heat, humidity and that gear you have on as well as being strapped into about the most uncomfortable seat every designed.
Sooo....
Try this
1. hydrate to the point of having to piss continously

2. Peanut butter toast for breakfast (or the meal before your flight whichever)
3. Bring some water or gatorade with you on your flight
4. When your down low, have the IP take the controls and LOOSEN your straps
5. Consider getting a chest extender from PR's in order to give you a little more room in your chute(should only apply to bigger individuals)
6. Make sure the A/C vents are pointed toward your face ( yeah I know the A/C is a freakin joke down low)
7.
Worry not......it will pass.
Best of luck and give us an update on how things are going
Good luck