Lisa I wouldn't worry, Elijah was very high even in early labour and once I was in active labour, he dropped right in. Because there is more space in your pre-stretched now, bubs will bob in and out as she/he pleases and it wont have any effect on how well you will labour. There are some things you can do in labour to help baby come down but nothing worth worrying about now or wearing yourself out over. Walking is brilliant, as is climbing stairs. Baby will be fine