Question re sleep techniques

[Mum2boy]

I have read TH's book, and applying the techniques now, and this is now helping my son Cooper (14 mo) with sleeping.

BUT, I am still confused about the following:

1. If my son wakes up earlier than 7, how long do I persevere laying him down to get back to sleep - what if it goes past 7am? Do I stop and get him up?

2. His sleep at night is much better, but his day sleeps continue to only go for 45 minutes x 2. Do I also lay him down until he goes to sleep?

3. I used to give Cooper his milk before his morning sleep, but following advice from TH, I give it to him at 7, before his breakfast. Why is this?

Would love it if anyone can help me with these questions. Thanks