Thanks for all the advice guys!!

She had one sleep again yesterday to test out my theory, and she slept for a 5 hr stretch last night and longer in total (11 hrs instead of around 9.5). So looks like if I only give her one sleep she will make up for it at night anyway. She stayed up longer in the morning and I gave her a sleep at 11 and she slept for 2 hrs (instead of the usual 45 mins - 1.5hrs). She was fine with it, she went to bed earlier and got more sleep. So looks like it's not bad for her, phew! Today she's needed 2 sleeps though. Maybe she'll just have one sleep a day a couple of times a week from now on and eventually it will get more frequent??

I am excited at the prospect of more sleep for me anyway when she does finally go to one sleep a day! LOL.

Thanks for all your help!!