Depends on your tolerance. Dexedrine affects mainly dopamine in your brain. Because of that, it tends to be more of a mental stimulation above a physical one. As seen with Adderall, the levo- isomer tends to act more on norepinephrine which causes your body's adrenic system to become stimulated, ie: racing heart beat, sweating, fitgeting, etc. There is still the risk with dexedrine to experience that jittery and restless feeling, its not uncommon to get restless thoughts.
You should be fine once your more adjusted to the effects of dexedrine, for me Dexedrine is amazing. Its clarity and the ability to fall asleep fine no matter how stimulated I am (moreso rated by dose I took). Its easy to fall asleep if you just calm yourself slowly, keep breathing steady, let your heart race if it must but keep your breathing slowly getting into that rythm for sleep. You want to do activities before bed that allow you to slowly decompress and de-energize your mind in a sense, computer, tv, reading, etc. You'll lose track of time but if you keep a close eye on the clock you'll do fine.
Listening to music with a slow pace, ie: classic rock, etc, will also help.
You should be fine, however, 2.5mg is not a high dose. The only thing you'd expect is a slight kick feeling that you'd get from drinking a coffee. You'll be fine. Overtime Dexedrine will feel like a mental clearing instead of a huge stimulation, though at any dose the concentration and confidence is increased though not ultra-apparent to unexperienced users. Higher doses should be avoided of dexedrine solely, people tend to sometimes have a better combination when using a medium dose of dexedrine with a small dose of adderall. The adderall will give the body stimulation you'll want sometimes.
Hope that helps, good luck, stay safe.
![:\](https://bluelight.org/xf/BL_Images/Orig_Emoji/wrygrin.gif "wry grin :\")
