Morning all, thanks for the advice. :)
Mindy had another hungry day yesterday, but my parents were over, so on hand to provide distraction to give me slightly longer breaks, as well as make sure I was fed and watered. We even managed to get out of the house and walk up to the local supermarket, so I could restock the house with food!
Keeping my fingers crossed, but today seems to be quieter.
Mindy fed at about 6:30am, then was fine to be left in the cot, awake but happily gazing around the nursery, for a couple of hours so I could do some chores - Yay! She just fed again, but it was only a five minute snack, and she's now fallen asleep on my knee. :)
So hopefully the last few days were just another growth spurt! She really is shooting up, I had her in 3-6 month clothes yesterday and while they were a little baggy on width, the length was about right.
She's not got that much length left in the moses basket either, which is why I'm starting to try and get her used to being in the cot.
At this rate, she's going to be towering over me before she's 1 year old. 
No smiles here yet :( but I think Mindy is almost there. There are hints at it, from time to time - a different expression to her "I have wind" face! So fingers crossed in the next few days she'll give me a big smile. :) I'm sure that'll help make the epic cluster feeds all worth it!