Selank or DSIP causing insomnia

hi, I wonder which of those two could contribute to two almost sleepless nights.

I started Selank three days ago and on day three I see mild anxiety decrease - I react calmer around people, also the chest and stomach anxiety decreased and my mood is better
DSIP I started same day (evening) that Selank and it gave me weird dream-like state, I basically didn’t sleep. Felt rested though comparing to other sleepless night or even normal sleep.
First guess was DSIP induced insomnia so the next night prepared smaller dose but in the middle of the night it turned out I didn’t even take it, and then injected around 4 am. Still despite lack of sleep it way quite easy to get up, only a mild headache

So now i’m thinking it was Selank that caused this insomnia

for context: I long-term take moclobemide in the morning, small dose melatonin in the evening, magnesium, q10, b complex, zinc, selenium, taurine . Dealing with chronic fatigue and unrestful sleep, ADHD, anxiety. Glycine and pregabalin always resulted in paradoxical insomnia

would tolerance to Selank build up and sleep would come? maybe on lower dose?
Or should I stop it and try DSIP only?