Wa alaikum as salam sister
May Allah bless you for your concern. Even if you miss a pray, at least you feel bad about it, which many people don't.
So here are a few points.
- Realise that the prayer comes first and foremost before anything else, and that ANY other action - be it family, work, play, entertainment, whatever - is secondary
- ALWAYS work our beforehand exactly when you are going to find the time to pray. Plan your whole day in advance with this in mind.
- Read the ayats in the Quran and the hadith about the importance of prayer, and inculcate them in your mind. Both the ones which talk about the rewards, and the ones that talk about the punishments of those who miss their prayers. But a word of caution, stick to those hadith which are known to be authentic. There's an email going around with a lot of unauthentic hadith about the punishments of missing prayer, dont even look at those kind of things
I'm sure others can give you advice here too. As for your child.... the best way to preach is to practice. First and foremost, a parent needs to SHOW his/her children what a muslim is, not tell them.
Hope this helps.