There is no order of difficulty in miracles. One is not "harder" or "bigger" than another. They are all the same. All expressions of love are maximal.
Miracles as such do not matter. The only thing that matters is their Source, Which is far beyond evaluation.
Miracles occur naturally as expressions of love. The real miracle is the love that inspires them. In this sense everything that comes from love is a miracle.
Reflection
Have you ever judged one problem as "too big" for a miracle? How would your perception change if you accepted that there is no order of difficulty?
All miracles mean life, and God is the Giver of life. His Voice will direct you very specifically. You will be told all you need to know.