My two cents on this, my second rolled back to front at less than three weeks and was doing it consistently by about 9 weeks, (had to warn the midwife and a nurse at well baby visits not to let go/leave him on the scale and exam table, both were disbelieving until he flipped for them!) did army crawl at 3.5 months and rolled either way all the time by 4 months... early? or normal deviation? this and great head control made tummy sleeping of necessity also quite safe IMNSVHO --- isn't part of the tummy sleeping question due to buildups of CO2 in pockets of bedding around and under the baby's face when on tummy? easy to reduce risk by putting baby on stiffer mat on firm bedding.... ps, patty gima, I LOVE your take on this! esp re Ezzo/ferber!!! go patty go! Anne E. Robb, MAT, LLLL Off on a Tanget, Oregon, USA mailto:[log in to unmask]