I have been playing around with solid foods, ri...

I have been playing around with solid foods, rice cerial with my 3 month old and i found that she sleeps A LOT better on the rice stuff. Before i gave it to her she was sleeing from 7 to 10 hours a night prior to her having a growth spurt and teething. Now she wakes once a night again for a feed. I gave her half a teaspoon of rice stuff mixed with breast milk and she ate it all up followed by a 10/11 hour straight. I did that for two nights, then stopped it to see if it was the rice helping her sleep or wether it was just a phase, she woke again in the night to feed, so ive given her half a teaspoon again today so could watch her, she wakes but only for a couple of seconds then is asleep again and has slept for about 3 hours so far. Im going to take a guess that she wasnt getting enough at the boob to fill her up enough to last the night through. Has anyone else found this?