I was introduced to a mum who was worried about feeding in this one position all the time. A mutual friend knew I had nursed my child in that position and asked me to have a chat with her.
She had trouble with the cradle hold with last baby and weaned to formula at the three month mark as the cradle hold was to painful.
Roll on to her new baby, she has been told by her health visitor that she can not continue to nurse her baby this way as the breast will not be emptied properly in the underarm hold.
Which I am assuming is rubbish, as breasts are never completely empty and I have fed my 22 month old pretty much exclusively in that position (except in bed)with no problems.
Just checking there is no other reason why you need to vary nursing position if you found one that works for you and your baby ?