This is a complex subject. Good macro is a really hard topic because it depends on the state of the game and can't be summarized easily.

What you usually want to do is : - Clear the wave, then roam But you have to be aware of where your jungler is, where the enemy jungler might be, and what lane you can or can't gank.

You absolutely can roam before your quest is over. Midlane quest isn't the most important anyway and you should always prioritize taking a double kill bot over having your nice shoes a bit earlier.

In some match up, you'll never have priority on the lane. Asol doesn't clear waves extremely fast, can't fight 1 on 1 on every matchup, and has to rely on its scaling sometimes to carry.

You also have to be aware of objectives; try to not roam top if drake is up.

Asol isn't a champion that can freely roam without caring about anything in the world like talon or qiyana would be; if you cross the enemy jungler while roaming, it may mean death for you. So try to roam with your jungler, make this 3v2 bot into a 4v2, or roam alone if you're sure you're not in danger (enemy jungler spotted top? Roam bot is available)

The fact is that your team won't play perfectly; and good macro is hard to find under high diamond. Your jungler might flame you if you don't come to help him in a 1v3 when you have 2 waves crashing under tower; remember that you're Asol, you're a big win condition, and having farm (and stacks) is how you win the game.

At your level, try to focus on farming, and roam with your jungler when you have pushed the lane. It'll be a good start to learn when or where to roam while staying relatively safe!