Fish don't just have Ich for a week. The white spots are visible on them as a part of the life cycle. The next phase is where people that do not understand this parasite get confused and think their fish was miraculously cured. Those spots will drop off and that live Ich goes into your sand and rock. That grows, bursts and comes back down the road, often worse.
Cleaner wrasses do not really do much, as the big problem with Ich is it likes to attack the gils, where you don't see it. Cleaner wrasses and shrimp won't do the trick where they can't get.
Feeding stuff with garlic helps boost their immunity, so not a bad idea, just understand that it is absolutely not a cure. Kinda like a flu shot... Might help, but doesn't mean you can't get the flu.
There are lots of articles out there and all agree that copper or hypo in a QT work. Leaving the DT fallow for six weeks works, as the Ich cant live without a host. The other stuff is a waste of money.