Prozac for almost 14 year old have you

My son was autistic from 2-8 didn’t talk. To keep the post short I’ll say. I’m blessed. He’s my angel. He’s overcame so much and proved the drs wrong. He’s struggled with anxiety for years. I’ve always been against medication always. But had recent testing and the dr recommend. He doesn’t sleep. So started on the lowest dose which is 10mg. At night. He is 5’10” and 165lbs almost 14 shoe. So not small and the dose is very small. I wanted to try wellbutrin bbt dr said no no no. Reduces bp and she doesn’t use in minors. I’m just struggling tonight. Any insight is greatly appreciated. Personal experiences. No negativity please. Thanks