I'm in Melbourne. The lactation stay I went to was at Jessie Mac, and I also had some help from my local MCHN.
My DS got better at breastfeeding and is now nearly 3 and still feeding.........
For almost all babies attaching gets easier as they grow bigger and less floppy and stronger.
I found that feeding my bub lying down worked better than any other way. I'd lie him on his side on a towel (eventually the MCHN pointed out that propping him half on his side with a pillow made it easier) and lie down beside him. That way I didn't struggle so much with controlling a floppy baby, and a ginormous squirty boob (F here too - it is a worry when your boob is heavier than your baby.....).

Priority one is get the breastmilk into the baby - so if at this stage that means mostly EBM then so be it. But also practise attaching - initially we had one attachment feed a day and slowly increased it. You may well find that it is easier to attach bub when she's not hungry (i.e. use yourself as her "dummy") and when you aren't too full. Even consider expressing, bottle feeding and then attaching!

Just wondering - while she "had the hang of it" were you less full of milk? I really think that expressing and then attaching might be the way to go.