economize, cut back, make cutbacks, make cuts, retrench, husband one's resources, budget, be (more) economical, make economies, be thrifty, be sparing, be frugal, buy (more) cheaply, use less, reduce/decrease wastage, scrimp, scrimp and save, scrimp and scrape, cut corners, draw in one's horns, count the/your pennies, watch the/your pennies;

save (money), cut expenditure, cut costs;

North American pinch the/your pennies

US dialect rake and scrape