The sentence parses fine as it is. There are two somewhat unnatural parts: First, it's rare to use 'frequency' in this way. I would perhaps consider 'schedule'. It's also possible you meant 'frequently', as in "For now we'll meet often, but later we might decide to meet less". Second 'learning conditions' is somewhat unnatural. Perhaps 'needs' is the most suitable replacement. We can set up a class schedule for now, and change it according to xxx`s needs after maybe half a year. It's worth pointing out that 'maybe half a year' is somewhat informal, but as long as that's intended there's nothing wrong with it.