I also had trouble sleeping after taking Camzyos for a while . . . can't remember exactly how long after starting that the insomnia began. Camzyos also did not help my gradient or mitral valve regurgitation, was tremendously expensive, and inconvenient given the required ECHOS and interminable amount of time put on hold while trying to refill each month, so I stopped. My productivity returned with Camzyos and I felt much, much better for a while. It is undoubtedly a wonder drug for many people with HOCM.
A caveat to all who take meds for hypothyroidism is if you lose considerable weight on Camzyos, get your thyroid level checked to be sure you are not overdosing on levothyroxine (synthroid). I didn't realize dosage was related to weight and was quite ill for months before my primary care physician caught the weight loss vs. levothyroxine dosage issue.