Couple days until the outside is crispy. Then put them in a jar with the lid on. Wait a day and take the lid off for a couple hours and put it back on. Do this for about 7-10 days. Once it’s mostly dried you can leave the lid on for a couple days and then repeat until you’ve got about 2 weeks of cure. Then bag it and tag it.
The single bud you have hanging is gonna dry way quicker than that branch with all those buds on it so keep an eye on that. Normally you should cut the branches off so they're relatively the same size when they're drying or just do what I do and cut and hang the whole plant intact.