I sure hope that your docotor isn't trying to push you over the edge as you suspect. What a horrible thing to do! Perhaps he is just giving in & trying to help you manage your pain better since you have been so insistent that you do not want the pump. If you are worried about the amount of meds that he prescribed the best thing to do would be to talk to him.
I am very lucky that my doctor is so easy to talk to. I just recently switched to my pcp from my pm, because like you I am very scared of my meds, especially since I've only recently started taking heavy opiods. My pm was just too busy, unlike when he explained procedures, he hardly explained anything about the meds. I was scared and confused, and no matter how much I tried to talk to him, he was just so curt. I always left his office upset because of this. I liked the guy, but he just wasn't good for me at this time. My pcp never rushes me & explains everything. While I'm still scared, I'm no longer terrified. I sure hope you can find another doctor who will take the time to listen to you and who truely cares for you and looks out for your best interest. If you think this guy is just using the increased meds to push the pump on you, you definitely need to get out of there. Remember that it is your life, and you should only do what you feel comfortable doing. He's not the one with the pain. He's not the one taking the meds, and he's not the one who would be having the surgery.
Could you start off increasing your meds gradly, and see how you feel before reaching the maximum dosage of the increase he prescibed? You could also try talking to your pharmacist. Good luck honey, I do hope the new meds help you & that you can find a new doc if that is what you decide.