Baby might come in 3 weeks?!?!

Went to the doctor this Tuesday and he checked me to see if I was dialated and he was surprised that I was 1 1/2! Cervics hasn't thinned out but he said he don't think I'll make it to my due date (which is 9/1)  he said he guessed I'd have him in 3 weeks! I feel like i should be doing something to help with the cervics thinning or something but I don't wanna rush anything. Any advice? This is my first baby and I was ready to go 42 weeks (I am 36 today) not going to induce. I'm just excited and anxious now 😜