Boy, are you in for a surprise!it's not like our baby will just go from wiggling to jumping up and down overnight.

Not to mention a whole bunch of sleep deprived fun.
One further suggestion: If you are used to using the Hasselblad with rocks and trees, you probably bring a "maximize quality" approach to photography. You need to work on expanding your repertoire by bringing a "maximizing fun and spontaneity" approach to child photography.
A little blur is probably okay!