for nearly a week now my DS has been off his milk. he has gone from draining his 7oz bottles to only taking a couple of oz at each feed and absolutely refusing to take any more. he is not feeding any more frequently and his moods are fine in between feeds. he did have a cold this week, but the trouble with feeding started long before that and continues now he's better. obviously am getting concerned for his nutritional intake and hydration. he's gone from taking 30+ oz/day to sometimes as little as 20. he is on fastest flow teats. he is 5.5 months but not on solids yet. any advice?