Master's degree takes longer to get, than a year, though, and as far as I know, shed be required to quit her previous career once she got engaged.
The way I see, this all would take huge effort and demands from Meghan, imho Harry is very aware of that, his 'baggage' way outweighs hers, and for him to demand, that she give up her career and life, move to UK, while not really being able to do anything, and just shack up with him, might be too much to ask. But these are just my thoughts, I'm in no way in the know what Harry and Meghan are planning to do.