"In the past I have had unexplained seizures but since starting cleansing these have almost all gone away." WOW the fact that this is getting better is fantastic!

The emotions is normal, I get nuts when I cleanse...not so much anymore, but I used to have flashbacks and panic attacks, depression etc when cleansing. I haven't had any of that with my last (5th?) cleanse. I found that journaling, and especially praying to reach some healing and forgiveness was very helpful.

The parasites toxins are just that...toxins. And their dying off can cause an overload on your liver and central nervous system...really on all your systems.
A few things that I do:

Lots of water (and with lemon)
Someone on this list suggested pepperment tea and I now do that whenever I have die-off, I love it with raw honey.
Licorice root is very calming to me and is anti-inflammatory. Others are chamomile, Valerian, skull cap, and any other calming herbs.
Ornithine is an amino acid for night time when the toxins are really heavy, and you have insomnia or agitation. Arginine, another amino acid is for day time. They are recommended by Dr hulda Clark.
Epson salt baths, I also have heard that apple cider vinegar is good too, but I haven't tried it.

If it gets too bad, you may want to back down on the dose for a day or so.

As far as the wiggling I can't think of what would help with that.

Best Wishes!