Hi,
Always increased nursing works the best to up your supply. Would your lo cooperate and have an additional nursing during the day? Or stay longer on your breast to suck for a little while? This are methods that will do no harm and will increase your supply. However, I know how little ones at this age are too busy to stay on the breast and will refuse it very often if not hungry. Also, are you feeding her solids before or after nursing? If before, that can affect her apetite for milk and she may take less and less of it.
Next thing to try are herbs. Use herbs known for increasing milk supply such as Fenugreek and Blessed Thistle, they are can be found in health food stores and they usually come in capsules. I tried Fenugreek tea, which is less potent than Fenugreek in capsules but it did work well for me as I haven't had serious problems with supply. This increased my supply very fast, within an hour I had a much stronger let-down. When it comes to feeling safe about taking herbs, I am pretty comfortable taking them, but I don't take any other drugs so I don't have a chance to have any drug interactions. Fenugreek shouldn't be taken if you are pregnant.
Also, some drugs are known to have a side effect that increases your supply. Such is Domperidone, you should ask your physician if she could prescribe it for you. But I think this is better if you have very serious problems with your supply.
Last but not least, you should be drinking water, it really has an impact on your milk supply. It is a good idea to drink before nursing. Your supply will go down if you are stressed, tired, menstruating, pregnant or you don't eat well.
Hope this helps,
