I can only answer part of your questions. That’s because I rather not speak up when my level of knowledge is too low. So I will answer only the question where I think I do have the knowledge to answer.
That would be your question 1: can candida pass through the milk.
The answer is: yes. It can and it will.
The reason is that everyone has candida. It’s on our skin, in our mouth and nose, on all of our mucous membranes, in our intestines, and so on.
So even if candida isn’t in your milk, it certainly is on your breasts and on your nipples. It’s on your hands. It’s in the tiny droplets you inevitably produce when you talk to your baby. So you will transfer it to your baby, no matter what. Even if you wouldn’t do that, others would.
So the question is not about having candida. The question is about having candida overgrowth.
The latter is a matter of balance. Balance between all of the organisms that are on us and inside us. Remember that our micro-organisms outnumber us (by a large margin!) when it comes to cell count.
How to achieve balance? By doing nothing special. Balance is the normal situation. Eat healthily. And don’t be overly “hygienic”. If your baby starts moving about and eats some dust off the floor in some forgotten corner – don’t panic. She’s just adding more micro-organisms to her system, which will help achieve the required balance. When she starts playing outside, gets dirty, even eats some mud – let her. When she falls and has a wound – do only basic cleaning. No disinfectants please! The wound will swell a bit, it will get red, maybe yellowish stuff will come out – that’s all part of the body’s own exquisite defense system, which you must allow to develop, to train itself on properly doing its job.
Protect your children only from the real threats, the ones that may permanently endanger their health. Embrace small threats, because they are no threats – they are health boosters.