Peptides causing bad sleep

I’ve been taking GLP peptides for a while with no issue. Was recommended GHK-Cu by literally everyone and didn’t hear of any bad side effects. Gave it a try for a month and noticed serious decline in my sleep. Also tried DSIP and has legitimately the worst three nights of sleep in my life. Gave up on the the DSIP and took a two week break from GHKCu and sleep improved tremendously. Gave GHKcu another go after taking a break and can almost definitely confirm it causes bad sleep for me.

Curious if anyone else has had a similar experience. And if anyone has peptides that have worked to improve sleep as even my improved sleep is not great.