I don’t have similar symptoms but medication effects can really vary between people. It’s best to talk to your medical provider to try other options or dosages.
For me, vyvanse really only gives me reduced appetite and slightly increased heart rate, though at higher doses it keeps me up at night no matter when I took it. Lower dose fixed that while remaining effective.
Generally it will cook a lot of things better than consumer ovens because consumer ovens are fucking garbage.
But yeah, it’s just a small convection oven that heats faster and more evenly. I love mine. I mostly only use the oven for things that require a solid tray or don’t do well with the fan in close proximity (mostly certain frozen foods). And baking.