You can without fear do all those things:

- lemon – olive oil drink every day

- castor oil packs every or every second day

- flaxseed oil + cottage cheese at least 3 – 5 tbsp every day

- fresh vegetable juices at least three cups a day

- parasite cleanse done with parasite killing herbs, as suggested by Hulda
Clark.
(make sure you don’t take too much of parasite killing herbs.
If you, for example take three times recommended dose, it may be toxic, you
may get paifull headache, and your child may get headache.
Those herbs , if taken as recommended, are not dangerous.
I was giving them to many children, (made as tincture), together with
apple juice, and no one have ever reported any side effect.

Doses for small children are 5 times smaller then for adults. Depend of the
amount of food that person eats.

Lemon, olive oil and flaxseed oil will not harm you or your child even if
you take 3 times recommended dose.

So, neither of those things will be negative for the quality of your milk.
Actually oppsite.

It will increase the quality and amount of milk, directly (nutrients), or
indirectly (by killing eventual parasites).