at one bottle to no bottles per day, I'd go with hemp or goat's milk. I have a good friend that used hemp milk for her son, she is a vegan, and I have used goats'. I can't help thinking that real food is better than manufactured stuff, especially if it's just a supplement.
If it was half the feedings per day, I 'd have said formula.
absolutly do not use goats milk with a baby that young. It does not have the same fats or nutrion as formula or BM! And of your LO is having issues with milk AND soy, its a protein issue like the pp said.
I would use nutramagin or Almintum or even Neocate, but 9 months stilll needs formula, and the extra fats and things that are in formulas and BM.
If you need to find something for you to drink i would suggest, hemp milk or almond milk or even rice.