Don't push the baby on him, let him discover it in his own time , but at the same time don't hover over him telling him to be gentle etc (unless its something dangerous)
Agree with this 100%. There is only 12 months between my two but I found DD1 was much happier having DD2 around when she wasn't being told to be careful around the baby etc. She's a naturally gentle little person anyway and was great.

I found finding time for DD1 just the two of us very difficult but when I could find it, it was great. When DH finished work I would make sure he took DD2 asap so that I could play with DD1 for a bit.

Throw the rule book out for a bit. In those early days, wonder weeks etc when you have a babe on your boob seemingly 24 hours a day you really need to just go with the flow and do whatever you need to so that everyone stays as happy as possible - including you.