Moms of 2+: Did you gain more with a summer baby vs non (or if you've only had 1: more than made sense for your activity level and eating?)

I'm 35 weeks and already at the total gain I had with my 1st (a March baby). This makes no sense to me because I'm eating the same and probably more active (chasing a toddler around and doing tons of things around the house and errands everyday vs desk job with #1). I'm not noticeably swollen but I might be a little puffy in the face and feet.

There's nothing I can really do unless I changed from snacking on apples and cheese to plain kale (ha, not happening) so it's obviously not a HUGE deal. Just curious ! Maybe little sister is going to be bigger than her 8 lb brother!?