is the pot light or heavy since watering? If it was that long ago the soil may have become hydrophobic so most of your water may have just passed right through.. If that is the case a drop or two of dish soap or some aloe or yucca mixed with your water can help. You will also want to water very slowly and in batches, it may not be a bad idea depending how it goes to allow the plant to sit in some water for a little while to saturate the medium