Well, it is a problem somewhat - is this who he is, who he's always been? Then the OP is being more than a little unreasonable to expect him to change himself for her.
Ok. DH has a high sex drive. Before babies we would hump like little bunnies all the time. After baby, I wasn't in the mood because... well, babies.
The situation changed and we needed to change with it.
It would be stupid to tell a woman to continue having the same amount of sex even though she's feeling depleted and exhausted with a new baby.
Why is this any different?
He was a certain way when there were different circumstances. Now the circumstances have changed and he needs to adapt. It could have been fine before because there was no baby to wake and the OP had more emotional resources on hand. Now there is a baby and she is feeling depleted, so he needs to stop. It's that simple.
She is entitled to her own body autonomy and that includes getting some space when she needs it, and having a partner that respects that. It doesn't matter if she enjoyed being touched before, she doesn't now. Your argument is a little too rape apologist for my tastes. She is not obligated to put up and shut up simply because she liked the touching previously.
If I always ate shellfish and then developed a shellfish allergy (true story btw), it would be stupid to continue eating shellfish simply because "that's what I've always done and it was fine then". It would be up to me to change and adapt to the situation.
If he's suddenly switched to being needy and insecure, then what's causing it?
That's up to them to both figure out and in the meantime he still needs to stop.