Does your lo take a bottle well? I guess that would be an important thing!
I didn't have any experience giving formula to my DS but when it came time to wean him onto soy milk at about 12 months the literature I read suggested mixing 3/4 bm with 1/4 milk (or formula in your case) Do this for a few days and then go to 1/2 and 1/2 then 3/4 formula with 1/4 bm. This way you can gradually get your lo used to the new taste. Make sure you don't do anything else new so that you will be able to notice if there are any allergic reactions or upset tummies because of the formula. It would be ideal if you could pump enough to always give half and half bottles (half bm and 1/2 formula) but I undertsand how hard it can be to pump large volumes!
When you mix the breastmilk with the formula make sure that you make the formula according to package directions (with water) and then add breastmilk to it. It doesn't work if you just mix the bm with the unprepared formula
HTH and good luck!
