Toddler preschool fear and excitement

I know this has nothing to do with this group aside that I'm due for boy number 2 in December. I just cant contain my excitement. My 4yo is autistic and it has been hell getting him in therapy because of his fathers tricare and his dads lack of understanding. So I contacted an organization that places special needs or developmentally delayed children in preschool that provides therapies. I did the conference yesterday and we checked out the classroom my boy immediately went to play with the toys he loves his classroom already. I started crying because it's hard to try and trust somebody with your baby who you've taken care of for 4 years. I know hes going to do great but momma bear is still worried. He starts tomorrow.

Edit, his first day went great he did some crafts for a few minutes with his teacher and played all day. When she brought him out to me he was bawling he didnt want to leave so I'm going to take that as he likes his school.