Can’t afford new inserts...help!

My twin boys are 6 months old and I was gifted pocket diapers with microfiber inserts as well as bamboo/charcoal. I understand that they aren’t the BEST for inserts according to my research but the whole purpose in being gifted 24 pocket diapers was to help with the cost of diapers. I’m not interested in hearing all about the going green method and how I need hemp inserts. I simply can’t afford to invest in inserts that may or may not work. What can I do to make these microfiber and bamboo/charcoal inserts absorb!? My boys soak through their cloth diapers and clothes they are wearing every time they pee in them. Any tips would be appreciated! TIA