Concerta hits me too hard in the morning and then I crash, but afternoon i feel great — help?

I’ve been prescribed Concerta 18mg. I take it around 9am, and it hits me pretty hard. The obsession I have with a person (which is usually overwhelming) disappears completely — which is good — but the overall effect feels too intense. Around 1-2pm I start feeling a weird pressure and warmth in my head, and then the crash hits. During the crash, I feel mentally chaotic, extremely tired, and it's hard to function. I usually eat something and rest, and after an hour it passes. The strange thing is — I feel GREAT in the afternoon. Lightly positive, calm, and socially motivated. I’d love to keep that afternoon part without going through the intense morning and that awful crash. I stopped taking it because of this. Has anyone else experienced this? Any tips on easing the crash or maybe switching meds? Thanks in advance!