Baby kittens found in garden soggy, wet. Needs helps plz.

Hi my name is Tammy, I love to help neuter and release feral cats and handrear any found/abandoned kittens/cats. Normally rehoming or re releasing where possible to suitable homes. I currently have 4 baby kittens that were found in a garden soggy and wet. I am looking after them until weaned fully, litter trained and suitable homes found. These little ones are using the tray and eating a mix of both meat and baby milk porridge but still have a few weeks to go. I’m just looking to raise a small amount just to help with the cost of food, milk, litter, inco sheets they are hungry little ones and 4 to feed. Also a vet check any some flea and wormer to get them ready for the big wide world. I'm not a charity and do this off my own back as I'm a sucker for a cute kitten face. Update mum has been trapped for neutering as she is a feral and this is her 3rd litter that's known of. She won't accept kittens back as she is stressed.