Daughter having food issues

My daughter will be 8months on the first and is going through formula like crazy. Up to 14 cans just this month. I do feed her baby food 2 times a day and have tried introducing table food but she will refuse any sort of table food. I’ve tried adding rice cereal or oatmeal cereal to food and or bottles to help keep her full longer but she still wakes up every 3 hours and is hungry and the cereal constipates her so I’ve had to stop giving it to her. Any suggestions as to how to get her more interested in table food or where to start. Also sleep help for at night keeping her full so she sleeps longer but not sure what to do. Also she is on soy formula due to severe constipation issues due to the formula she was on.