I wouldnt be too worrid about it...as the saying goes "until one, food is for fun" (as in breastmilk or formula should be the main nutrition). Plus if he is teething it might not be the best time to start. We skipped cereals and opted to start with fruit and veg purees, favourites were pear, sweet potato, and banana. DD1 was more for BLW, DD2 hated certain textures so stuck with her purees for ages!