Getting back to...

Pay attention to the vocabulary here:


get back to a topic
mention - mentioned
meet - meet on Friday
discuss - have a discussion
discuss further - discuss things further

Getting back to the topic at hand, ...
Getting back to your previous idea, ...
Getting back to where we left off last week, ...
Getting back to our main issue, ...
Getting back to your question on learning frequency, ... (we follow the regularity principle in our curriculum arrangement, meaning - different learning tasks are arranged daily as it contributes to the sustainable progress.)