Taking Hydroxymitragynine Falling Asleep

Anyone else have this issue? It feels nice for sure, but I have such a hard time keeping my eyes open that I can't really enjoy it. Taken a bunch of caffeine, same thing and taken w/out caffeine (so I don't crash) and same thing. I could be taking too much (25mg is where I fall asleep)..? But if I take less the feeling is not as good heh.

Any advice here besides buying street drug stimulants which isn't on the agenda (buying non street drug stimulants I would be up to buy some stimulant online though).