Any ideas for an autistic Female 20yr who wants to shave

Alaysia

Heres the thing im a 20year old autistic female, i have shaved mutiple times but am having trouble, my arm pits hair literatly grows back in the space of 21 hours, legs hair takes 3 days to grow back. I am getting anoyyed at how many times i need to shave my arm pits feels like i am doing it every 2 or 1 day. I use good shaver with refillable head to put on. Not to keen on wax as thats to expenisve for my bugdet which would also mean no expensive treatments. Any ideas for me?