My african clawed foods need different food ??? can i get anything online x ?

I got two Africa clawed frog about a year ago , and I am finding that buying the little tablets from garden centre foods like bloodworm , shirmp , any carinvore diet food stuff ect are just not enough as the female will consume 90% of it in seconds, no matter how much I put in . It is costing me a lot . Does anyone have any ideas of web site where I can buy a variety of frog food ?? The hardest thing is they will only eat sinking food