Even with the tea, you're meant to have a few cups a day.

You can certainly build up to the recommended amount, but I wouldn't take too long about it, you don't have long to go! The tea certainly is a LOT cheaper (I buy a bag for $3 which would have about 60 cups worth in it) but trust me, you won't be concerned about the cost if it helps you to have a better, shorter, labour

Yeah, good point - I keep forgetting I don't have much time! I just took two now, will take another 2 with dinner and 2 before bed.