anyone have any kids with autism that stutters?

anyone have any kids with autism that stutters? my son is 7 and is in first grade. has special therapy classes everyday so hes in his home class for a little over half a day. he started a little while back and has gotten worse. he stutter on the same syllables i did like w or i or e. when the spotlight is on him its worse or when hes excited its way worse. im at a dead end and have no idea how to help him. my parents couldnt afford doctors for me, i probably have autism too. everything i struggle with he does too. i have no idea what age i started or what age i got better but i know i was young when it started. dad would always cut jokes and most of the time slap the back of my head to try to get me to stop. kids in school are mean and shit and i hope he dont get picked on like me through school. what can i do to help? he has therapy at school, when he starts i dont say anything i listen and when he starts getting frustrated i tell him to hold up and take a breather. it tears my heart out when i hear him say stuff like “why cant i talk right!” eye contact makes me stutter so alot of the time im looking away from people they just dont notice i think. i always switched syllables for a while to try and help which it did but i couldnt say stuff right so i quit. i dont really know what to do here and it stresses me but thinking about him being bullied in school just like me. thanks for any suggestions or tips.