I'm sorry that you're struggling with lurasidone/Latuda. I hated the stuff! They doped me up with loads of benzos and I was still crawling the walls and pacing 30,000 steps a day. I literally could only stop when I was in too much pain to walk anymore. I only got up to 55.5mg (dosing is different in the UK) over 2-3 weeks before I begged to stop as I couldn't take it anymore and was severely suicidal. Thankfully it went away soon after stoping.
I wish you the best with your next med

Sucks about the invega when it worked so well...there is a drug that can lower prolactin though - did you ever try that?
ETA: Bromocriptine or Cabergoline.
*Willow*