Can't help but chime in here, as I have gone through horrible bouts of insomnia after running a cycle. The last one that was really bad lasted over 2 months, and like the OP, I was only getting ~1-2 hours of sleep each night. There were some nights where I never slept. It was an absolute nightmare, and I was literally going insane from the lack of sleep. I had convinced myself it was the serm that was causing it, and stopped taking it about 2 weeks into pct. But the insomnia didn't go away for weeks after that. I'm convinced now, and I think it's pretty accurate to say, that it was simply the hormonal imbalance from the cycle that was the root cause, not the serm. I tried many products to help me sleep, but none really worked for this type of insomnia, at least for me. My hormones just had to finally even out.