Sposie Diaper Booster Pads | Stop Leaks in Baby Overnight, Nighttime Diapers | Disposable Toddler Training Underwear Girls & Boys | Adhesive Diaper Pad | 84 Count (Pack of 1)

Size up the diaper and get this Sposie insert from Amazon for your regular diaper. Don’t bother trying overnight diapers, I tried them all. Mine is a stomach sleeper as well. https://a.co/d/05VZkWRY

agree size up but sposie pads were my lifsaver for my baby at that age- they are inserts that go into the diaper. Linking them below (i know they say 4-6 but we used with size 3 and they were fine- i liked that these ones had adhesive!) https://a.co/d/05J0feGM