Hi there. I am going to talk about some practicalities as the psychological side has been well covered.
DH and I had sex when DS2 was two weeks old (also a cesarean). However DS2 was in PICU and now I think about it, I suspect I was desperate to concieve again in case he died(!!) - in some lizard brain way. At the time it was all a horrible blur.
Have had two other cesareans.
Doing it after two weeks wasn't that comfortable - and it was difficult to find a position which worked. I felt very dry and 'stiff'. The awkwardness killed any sexual excitement for me but I was just desperate on some primal level to do it. DH wasn't keen (he was worried about hurting me). I mention all that because if your DP saw you go through all that he may have similar misgivings and the whole process may not be the bonding experience you are hoping for.
Also I am not sure how your lochia is but having sex seemed to make mine a bit worse for a while (which makes sense).
All in all be careful with yourself - physically and (of course), emotionally.
The sex I had when I actually wanted to have sex (about 6 weeks after DS1 and 4 weeks after DS3), was miles better.
I guess what I feel I had in common with you is wanting to have sex for a reason other than wanting to have sex, if you see what I mean. There are better ways to strengthen your marriage at this time I think. I know it's early days but I suspect asking a friend or family member to look after the baby for an hour or so while you and your DP go out for a meal might be a better way to remind you both that although things are different, you can still do the stuff you did.