Addiction - When is it 'safe' for an addict to throw his GBL away?

[Kanthor]

SWIM has used GBL for about 4 months month. Most of the time 16/7 (so every day SWIM took 8hrs off). However SWIM went on vacation a few weeks ago, and used an awful lot of GBL 24/7 for a week. Suddenly the 8 hrs off was very hard to achieve, and SWIM slowly worked up to 6hrs break.

A week ago SWIM converted a bunch of GBL to GHB and only used GHB from there on, though GBL for sleep.
The last 2 days SWIM managed to break 'records' of hours off; first 9.5hrs without with the help of Phenibut+GABA combo, 2nd 10.5hrs off with help of 20mg Temazepam (only 2x20mg left).
Now SWIM is 9hrs without with no 'helpers'. And SWIM feels great and powerful enough to tackle this thing once and for all. Sure he has a tremor here and there, but is able to live with it.

SWIM doesn't feel the need to do any GHB, but is scared to throw everything away if the symptoms can get more severe.

How do withdrawal symptoms develop with GHB? Will they become more severe & severe as the hours/days go on, with a peak at say day 3?
Or will it become easier and easier to deal with?

SWIM will get a bunch of Valium+Ambien at the end of July, but he really doesn't want to wait on them if he can kick the habit right now & here. (SWIM doesn't plan on using them either if G gets kicked before arrival)

What would SWIY advise? Anybody is able to give SWIM some overview of the day's of G withdrawal?