Pediasure

So as many of you know my 2 1/2 year old son has a condition called Alagille Syndrome that affects his liver and his heart. He is very small for his age, only 22 lbs right now. So the Drs are trying to find ways to be able to help him with his growth stimulation. They have said that he is eating very well on his own and the dietitions are very happy with his consumption. So, they are going to try him on Pediasure, drinking 2 bottles a day in addition to his diet. I went to the store to look at the Pediasure and pick some up for him and noticed that at my local store they are $10.49/6 pack of bottles. So with him drinking 2 a day that would be 14 bottles a week, so approx. $25/week in Pediasure alone! So what I am asking is if anyone has seen any good deals on Pediasure or if there are any coupons out there could you please let me know? We are going to talk to our insurance company to see if they can help us out at all, but who knows. Thank you in advance for any suggestions!