I was taking the exact same amount as you for the exact same amount of time. I won't sugarcoat it for you, days 1-4 are the worst, I held out the first 72 hours on zero sleep and actually went to work on the third day, it was hell, but my sudden decision to quit came at the end of a vacation.
I caved in on the third night and took 2 grams like you to help me sleep. It was the only decent night's sleep I got for the first week. Yes I know that prospect sounds awful. I tried everything to make it easier but nothing really did the trick. The only thing you can really do is wait it out.
The problem for me with restless legs was that it wasn't physical. No amount of supplements or leg rubs or whatever did the trick, I believe the RLS is tied to the mental aspect and anxiety, because every time I tried to lay in bed and sleep it became a thousand times worse, my mind would race a million thoughts a minute and nothing could silence or relax it but time.
I had the opportunity to work late afternoons and nights during my withdrawal, so it basically got to the point where the first few days, I got zero sleep, as mentioned I dosed a bit on the third night. After that sleep would come however unwillingly, probably due to sheer exhaustion, I'd fall asleep at 8, 9, 10 in the morning and get an hour or two of sleep. It wasn't great but eventually it started getting earlier, falling asleep at 7, then 6, then 5, then 4, then 3, until I had a somewhat normal sleep schedule (I fall asleep late anyway)
The restless legs went away after a week, but general insomnia persisted until day 10. After that I was able to sleep without drugs, though I got sick and started taking nyquil. People at work think I've been sick for a month haha...basically cause of withdrawals then an actual cold.
Don't listen to the guy that said it'll take 4-5 weeks to feel normal. That simply isn't true. Around day 5 and 6 I started having these wonderful flashes of normalcy, waves of crashing emotion and euphoria. There was also some moments where I was very anxious and down, and yes a month later I still feel them, however this is a normal part of life, you can't feel good all the time
For me the benefits started immediately. Over the last year people have told me I looked ill, like I wasn't eating right. This is because I would take kratom instead of eating meals. I would basically eat one meal a day, sometimes very little at all. After quitting my appetite skyrocketed, and while it's hard to eat while you're anxious, I found that the energy that kratom used to give you can be found from eating foods. For those days where your stomach feels like it can't handle any solid food, fruits and veggies and really delicious. A nice fruitsalad worked wonders.
I can also go out and do things now without obsessing about my next dose. I don't spend every moment at work looking at the clock for my break or to go home so I can take kratom. I can spend a full day with my girlfriend out and about without kratom, or the desire for kratom, interfering.
I miss it, I really do, and I still get cravings. You're not going to feel good all the time, but remember that kratom didn't make you feel good all the time either. You said you took kratom and four hours later the restless legs were back. Kratom is a short living drug, this is why we ended up dosing as much as we did, to keep that feeling all the time. And even though it didn't work that way we chased it anyway.
You won't have to chase anymore when this is all over. You'll be able to go to bed at night and sleep for eight hours without dosing, get up out of bed in the morning without dosing, spend a full day out of the house without dosing. Itll take time but every second of suffering will take you there, and I promise it will get better.