When I do two magic squares, I tend to wait a long time between them. For example, I might make one in the morning and another in the evening or afternoon. However, if you’re new to this or have only recently started meditating, I strongly advise against using magic squares, as they require a lot of energy. This would leave you feeling tired and, more importantly, wouldn’t even yield a good result from the square.
Long mantras are certainly the most comprehensive, but when you don’t have much time, even the shortest mantra can be just as effective