A common excuse that tai chi students make is that they don't have time to train at home between classes. This notion is based on a false understanding of yin/yang.
In order to get something, you have to give something. Our entire society is based on this, isn't it?
If you want a loaf of bread, you give up money. You want to watch a movie, you set aside the time. If you want to get good at tai chi, you will need time to practice at home.
Therefore, if you want to practice tai chi at home, you will need to give something up. Make space. This may mean less TV. Less internet. It's your choice...