So, lying to life partner is good thing? And this is kind of value one should pass one to one's child?
There is zero truth to the bonding angle. Have you ever heard of Jewish mothers?
If educating your DH and telling him it's not his choice (or yours!), only your son's, doesn't work then tell him that it can significantly affect bonding and, because you guys didn't have the process of pregnancy and birth to bond, you especially need as minimal disruption as possible! Tell him that you can deal with it in a few weeks, just give it a few weeks to bond and then you'll take care of it. (Who's he to know that "deal with it" means do nothing. ) If you are planning to induce lactation, this is also very very important.
Honestly, just make it clear to all the nurses and doctors that it is NOT to be done, and don't give your DH the chance to consent to it without you there to stop him. And I'd also write on the diaper DO NOT CIRC (which I normally don't think is always necessary, but in this case it sounds like a good idea since being adoptive parents can make everything a little tricky).