Stray cat + kittens

Hello! i feed this cat and have been feeding her since January. i know about community cats and TNR programs so i don’t need advice on either of those topics, i will be releasing mom back outside once she’s spayed and doesn’t need to nurse anymore. I knew she was pregnant, and I know the week that she had the babies so I know they’re four weeks old. I found them a couple days ago and they’ve been in my bathroom since i found them, I want to be able to let them out of the bathroom but they have fleas and I don’t know of anything that I can give them that’s safe for kittens that young. I know about dawn dish soap being able to kill fleas, but the mama cat is just gonna keep re-infecting them because I’m not bathing her because she will tear me up lol. i went to Jacksonville Humane Society on Beach Boulevard to apply under their kitten Krusader program, and They gave me a paper that had directions to call everypet to get them checked out and get their shots and dewormed and everything, but the problem is is I can’t get in until June. They’re going to be 10 weeks by then, and I don’t want them to still have worms (if they do have them) for that long and i want them to be able to get their shots at the correct times. i guess my main question is is there any other place that does free help? i don’t want to sound like a penny pincher but i really can’t afford shots and dewormer for all 5 cats. i’m sure mom has parasites too because she’s had diarrhea for as long as i’ve known her. i’m not planning on giving them up to any shelters because im aware of how crowded they all are