Sorry I don't have any experience with this.. I just looked a bit through 'Healing Lyme 2nd ed.' and did not see any mention of breastfeeding in the book (only pregnancy). You've probably already seen this from the website:
http://buhnerhealinglyme.com/transmission/breastfeeding/Someone in the comment section mentioned that cordyceps may reduce milk production (I could not confirm this).
I read through your other posts (your English is great).. a couple of questions:
Would you still describe your symptoms as mild?
After amoxicillin, did you have a break before moving on to herbs? If not, you may want to take a few weeks off to get a 'baseline' (to see where you're at).
If you decide to continue with herbs, you may want to do so with a focus on herbs that modulate the immune system rather than the stimulatory ones. I would try removing cat's claw because it can be stimulatory. I would add Chinese skullcap (scutellaria baicalensis) and red sage (salvia miltorrhiza). You may also consider ashwagandha (withania somnifera).
Question for anyone who knows:
Is the immune system generally upregulated while breastfeeding?