Lo is about 13.5 pounds at nearly 7 months old. He's probably 27 inches and he'll be crawling soon. He's been in size 2 Pampers Swaddlers for awhile now and although they fit fine around the waist, I feel like its hard to get them far enough up behind his bum - like maybe he's growing out of them length-wise. I need a new box and I'm not sure whether to buy the same or switch to size 3 Cruisers.

Any advice?

(I'm not interested in changing brands right now.)