I watched the first episode last Sunday, I think. I looked for the second episode this Sunday and found it on Wednesday.
From what you've said, I'm assuming I somehow missed the second episode and this will be the third episode on Wednesday?
I can't keep up with changing TV schedules. If it's always on the same day and time I have a fighting chance of watching it all.
For what it's worth, I thought the first episode was OK. I haven't read the book of Little Dorrit, or seen any other production of it, so it was all new to me. If I get organized before Wednesday I can try to watch Episode 2 before the third one comes on. Otherwise I'll just skip that one and carry on.