shore sth up
phrasal verb with shore verb FINANCE uk/ʃɔːr/ us
to support a business, system, currency, etc. that is weak and seems likely to fail, especially by providing money:
They put in an additional $3.6 million for its employee pension fund as part of a four-year plan to shore it up.
India's central bank has spent an estimated $1-2 billion to shore the rupee up since April.