Suse, you don't have a problem and you don't need a bottle or formula! Your baby and your breasts are working fabulously together. He doesn't want or need the formula. he may take it, when pressed - just like I take the extra helping at my MIL's. I don't want or need it - I'm just being polite. You have done such a great job. Tell you MIL and your DP how important this is to you and ask them to support you, not undermine you! Your baby is superbly well adapted - not clingy. And, when you hold your child close, they feel secure and when they feel secure they can start to naturally move away - become independant. Children who are constantly "pushed away" by not having their needs met *stay* clingy - or they give up. this may seem to be independence, but is not. They just learn not to ask for what they need.
Being a mother is constant and hard work. We need acknowledgement for this, and understanding, not to be pushed away from our children!
Regards
Barb