So this seems weird, would be nice to understand what's going on here.

I recently got "good" GHB from a friend who brews that stuff (we know for sure it's "good" as in multiple people tried it and verified its quality), my first contact with the drug

So basically the short form is (all consumed as GHB, but measured as "ml GBL" to make it simpler to understand):

• first use (0.5 ml GBL equivalent) - no effect
• second day I try it in small amounts: dip my finger in GBL first (taste test) and get a strong effect even without really swallowing it; assumng this was max. 0.5ml GBL, if at all; half an hour after that 0.3ml GBL-equivalent as GHB, takes effect in seconds instead of minutes like my friend told me it should usually effect me
• redose ca every 60-70 minutes by 0.3-0.5 ml, 3 times, this is roughly from 7PM to 11PM, and an hour later I drink a tiny bit of Gin tonic (don't really feel anything) as a test (I know.. don't judge please)
• proper tired go to bed at 2AM
• wake up at 6:30 or so, slight ringing in ears, strong pulse, can't really sleep anymore, dozing til 8; this is HIGHLY unusual as I sleep like a rock for 40 years now, and usually wake up super tired
• this "only 4 hours of sleep" and now repeats for days; no GHB/alcohol or any other drugs in that timeframe

Also feel slightly "buzzed" and "dizzy" in my head at times, I really wonder what's going on and I don't want to touch GHB anymore, but I'm also sad.. Is that a rebound effect? Is it known to show up even on second mild dosage?

Do I have some weird GHB sensitivity?
Is there a smarter way to take it to minimize the negative sleep effect/anxiety the next day? Read somewhere here that "timeframe of consumption is more important than single dosage when it comes to rebound effect", maybe that's true here?

P.S.: should mention I also have a history with Morbus Cron, so my itenstines and stomach are from time to time inflammated/a bit sensitzive, this could explain the fast onset of GHB.