Congratulations on your new baby. I can only comment on the way I'm training Maggie. She is now 14 weeks old. I got her when she was 8 weeks. She is being crate trained, (only at night). During the day, she is under constant supervision. If she cannot be supervised, then she is placed in her playpen, but only for short periods of time. When we first got her, I would take her outside to do her business every hour during the day and every 2 hours at night, AROUND THE CLOCK. Of course, when she was asleep, I DID NOT wake her to take her outside. She normally naps during the morning and also the afternoon for about 3 hours each. Gives me a break to do my chores and piddle on Yorkie Talk. It was hell, but paying off now. Not everyone can do this. I'm retired, so I have the time now. Now that she is older, she sleeps 6 hours at a time at night. Her crate is in my bedroom. When she whimpers, (usually around 1AM) I get up, take her outside and put her back in the crate. She is normally up for the morning around 6:30AM. Whichever method you choose, the key is to get them on some type of schedule, (eating, playtime, bedtime, etc.) and stick with it until they are trained. It will greatly benefit yourself and your baby. Here is a site that may help you with crate training questions:
www.midwesthomes4pets.com