Wetting through in sleep

As

FTM - now that my 15 week old is sleeping longer stretches and also just went up some in ozs that she’s eating she’s been leaking through her diapers by morning. I had read that some parents slip the diaper change at the middle of the night feed and put Vaseline on at the last diaper change before bed to provide a barrier to the skin and we have been doing this but now in the mornings her diaper is overly full. Do we need to go back to changing her at the middle of the night feed or are the diapers too small/not absorbent enough? I don’t want to wake her every night for a diaper change but I definitely don’t want her leaking through.