If you can afford it, I know there is such a thing as organic formula. Some of them might be made with goat or sheep milk. Do you have any whole food stores near you that you could check with?
I had my share of pumping supply issues with DD1 and I seem to be doing much better with DD2. I know you don't have a lot of time left but I've outlined below what I've tried. Maybe some of these tips will help you maximize your pumping output in the next 2 weeks.
If nothing else I would suggest you try Mother's Milk tea and definitely use the Marmet technique (you'll find a description on one of the Kellymom links I've included).
The links are at the very botton. I have titled all of them so you can more easily pick and choose the ones that interest you.
Regarding milk boosting substances (galactagogues), in addition to Fenugreek, there are some foods, herbal supplements, essential oils, etc., you can take to try and boost supply. Oatmeal (hot cereal, oat bran muffins, cookies, etc.) has a reputation for boosting supply. It works really well for some women. Also, some women seem to respond well to a nice piece of steak. Oddly enough, the steak would seem to work occasionally, but not always, for me.
One of the Kellymom articles discusses herbal galactagogues. In various combinations with mixed results I have used Fenugreek, Traditional Medicinals "Organic Mother's Milk Tea", Alfalfa, Blessed Thistle, Marshmallow, & Nettle; and some "essential oils" such as Evening Primrose Oil, Flax Seed Oil, Fish Oil, etc. You may want to avoid Alfalfa if there is a history of Lupus in your family. I would encourage you to do your own research on any of these; starting at Kellymom.com where you can find dosage info.
I was pretty desperate when I finally started using galactagogues so I felt like I had to use the shotgun blast approach. I started with Fenugreek and Traditional Medicinals "Organic Mother's Milk Tea" with pretty good results. Note that Fenugreek creates a maple syrup type smell. It is not unpleasant but you should be aware of it in case your baby starts to smell like maple syrup since that smell would otherwise potentially be a sign or symptom of some disease I can't remember the name of. Supposedly you need to notice the smell on you before you have an effective dose in your system.
Make sure to read the Marmet (massage) technique to improve your pumping yield. To enhance this technique try moving the horns a little off center in between massaging, in a pattern, (e.g. slightly up, slightly down, slightly right, slightly left) so that the suction is reaching ducts it might not otherwise reach. Try to follow the same pattern each time so you're less likely to skip an area.
If your nipples are blanched (white) after pumping you may need bigger horns (aka funnels, shields, etc.). The Medela website has a picture of what it looks like if you are getting squished. Believe it or not this can make a difference in your pumping output. I wish I had known this with DD1.
Here are some additional pumping tips: ~pump at the same time each day helps (presumably it conditions your body to know when to pump more); ~ pump for at least 15 – 20 minutes or until 5 minutes after you are no longer getting any milk (emptying the breast as much as possible increases the demand which in turn increases supply); and pump as early in the morning as possible when prolactin levels are higher; try to pump approximately every 3 hours or as often as possible.
What is a galactagogue? Do I need one?...Herbal remedies for increasing milk supplyhttp://www.kellymom.com/herbal/milks...actagogue.html
Increasing Low Milk Supply http://www.kellymom.com/bf/supply/lo....html#increase
Let-down Reflex: Too slow?http://www.kellymom.com/bf/supply/letdown.html
Marmet Technique http://www.lactationinstitute.org/MANUALEX.html
I know this is a lot of information, but I hope you find it useful. Keep us posted and good luck.