DS is almost 9 1/2 months old. I have been EP'ing since he was 6 weeks old, unfortunately my supply is decreasing. I mix EBM and Enfamil Lipil (about 1 oz formula, 4 oz BM) per bottle. I can't tell if DS is reacting negatively to the formula. He has been waking up more frequently at night but during the day he seems fine. Going longer between BM's so it may be a little constipating so I may jsut have to give it some time. Is it possible to replace the formula with rice milk and mix with 4 oz BM or is this a horrible idea...he is close to a year so I didn't think it would be too bad, but it says not to be used as infant formula. He eats 3 solid meals per day and loves his water as well.