okay, people who have quit smoking - can I ask about your experience of nicotine withdrawal?

I ask because mine is really strange. I have some cravings but those are mostly manageable, largely because I've spent 6 months switching from cigarettes to the nicotine gum

but now that my nicotine levels have actually decreased as I wean myself off the gum, it's... insane. I feel really tired all the time, but not normal tiredness: it's more like the jetlag / brain fog tiredness where you're completely disoriented and can't even understand basic things going on around you

my mood swings have been intense for like, two weeks now, and it's giving me a kind of psychic whiplash

my self-control is shot to hell. that's both true for motor control (I keep stumbling around like I'm drunk or something) but also decision making. i have almost no self-regulation right now. it's really disturbing

i have been absolutely non-functional for about two weeks and it's so frustrating

is this normal? if so, when does it stop?