Help Us Spay and Neuter Backyard Kittens

My mom has a litter of the cutest kittens in her backyard and we are trying to spay/neuter them and find them good homes! Our goal is to trap, spay and release the feral mother, and spay/neuter the 4 kittens when they’re old enough. We are interested in keeping 2 kittens, but the initial costs of flea checks, FELV/FIV vaccines & tests are costly. With the heat ramping up we want to take care of these kitties but don’t have the funds to help 5 cats. We’d love any help to get this done and prevent more stray kitties in the future!