I'm not sure it's a good idea to commit to it at this point. Is there anyway you can sign on later? That way you know a little bit better about how you will feel about leaving the baby, .
At 3months the baby does not NEED breastmilk, if you plan in advance and ween your baby onto a good formula you will be fine. You can also use a breastpump and save some milk so your parents can feed both. Babies only need breastmilk for the first 2 weeks to get the anti-bodies from the mother. After that there is no other benefit and formula can do the same. It is really just personal choice.
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