My mom watches my 5mo niece three days a week, and my ILs watch my nephew a LOT (like, every chance they get & they throw fits if it's fewer than three days a week). I recently found out that my mom and my MiL have been discussing how they are going to make child care work for us. I'm not planning on going back to work until sometime around Feb. 2015, and at that time DH & I are planning on primarily using either an in-home provider or (more likely) a day care center. While I certainly appreciate gumption, it kind of irks me that they took this upon themselves based on the assumption that we'll follow in my sister's & DH's brother's footsteps and rely on our parents for all of our child care needs, and especially without ever bringing it up to either of us.
So my question is this: How and when do I approach the subject with The Moms? How can I break it to them gently -but for certain- that they are not our first choice for child care? TIA