Toddler outgrowing size 7 diapers!!

Candace

My LO is 2yrs, 4 months. She is VERY tall and weighs 52 lbs. We have started potty training but she is just not ready yet. The size 7 diapers as well as the largest size in pullups (5t) no longer fit her. Anyone know of other options? I'm considering just buying goodnites but they are so expensive.