I haven't tried it yet, but I should be soon. From what I've read it's a bit stronger by weight than K, but not as crazy potent as the 3-MeO-xxx.
But definitely start slow. If I'm ever not sure about dosing,
https://m.psychonautwiki.org/wiki/2-Fluorodeschloroketamine is usually a good site to check out, just don't take it as gospel. I know I'm late af getting to you but if you don't have any experience with dissociatives, I would just start with little 5mg bumps, until you can work up to the normal size doses. After doing an allergy test of course. But just remember those doses do stack and it can sneak up on you.
You can always take more, never less. Especially with dissociatives, they're not like psyches where redosing can be shitty. I've seen some people say they like it better oral, but I can't say for sure. I will probably be doing both myself honestly, I know MXE and the other dissos its great either way, but K is pretty wasteful to eat.
I've usually found my appetite is suppressed on dissociatives, but I have definitely gotten nauseous from K before. I think that's moreso from not eating/drinking enough. Def stay hydrated.
Stay safe out there bud happy vibin