Welcome back! Potty training issues huh? I feel your pain
Funny you should talk about size, my 4 month old Mango looks so HUGE in comparison to when I first brought her home. I swear even when she wakes up from a 30 minute nap, she looks bigger than before

The funny thing is that she only weighs 2.2 lbs, but I think her legs are just growing much longer; she's just tooooooo cute, as I'm sure your little puppy morsel is