Dose to avoid underwhelming experience?

two weeks ago I took 15mg HBr orally and it pretty much felt like a microdose or non-psychedelic. essentially, colors were enhanced, music appreciation was cool, i had a body high, but that was about it. weaker than most of my cannabis experiences.

I then proceeded to take a 5mg HBr redose nasally (2:05 into the experience), which pretty much just kicked up the body high a lot and made me feel mildly disassociated and energetic. I had pretty much entirely came down 2.5 hours after I did that.

4:45 into the experience, after pretty much entirely coming down, I then sniffed about ~9mg (give or take 3mg) and an hour after that I finally got mild visuals for about 15 minutes (stars rippling in the sky, small stones faintly disappearing/reappearing), peak body effects, and very mild headspace for the first time. and then it was just back to the mild body high again.

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I was thinking about taking 28mg of the HBr orally tomorrow, would this be enough to not be underwhelmed?

I have zero experience on any psychedelics, that was my only ever attempt.