Short version: I can hardly imagine worse dosing advice for MJ. Levels accumulate across at least 4 weekly shots, and week four on a dose can feel wildly unlike weeks one to three. The 2.5mg to 5mg step trips up many people since it's the one jump where the load truly doubles. And you never reached the 2.5mg's full effect (roughly half the load), so what you'd feel is well over double. Plenty of people get away with it, yet it's a huge gamble. My own move to 7.5mg happened following 20 weeks at 5mg (plus a 4 week 2.5mg start), and I had zero side effects after my first 3 shots at that dose. The slow, patient route worked, so I'd never recommend rushing it.