Olive, that looks like a great little pillow! Don't worry Devons has only a tiny tilt to it now, and I only know , you just wouldn't nottice, Brody ijs just 6 mths, so you have plenty of time to sort it out. Ours by 1 year was really good, (and Devon was very late at 10 mths to sit up, and hated tummy time) . I did have an old fella chat to me in Sainsburys about his granddaughter (random I know) and he said she had this issue, and she was 18 mths and apparently the hospital said her bones in skulll had now fused together at this age and so it wouldn't improve after that, so keep working on it, he will be fine