Hi Usagi-chan,
Think of it this way.
CH 3B_3AB, 44b:B, a:B+K.
Think of it like a JF. The best way to practice is to go into training mode, turn on CH, and then just practice CH 3B, 44bB. But, before practicing the juggle, just practice doing 44bB as fast as you can. That means tapping 44 and bB right after. It takes some practice, but it's possible.
Think of it this way.
CH 3B_3AB, 44b:B, a:B+K.
Think of it like a JF. The best way to practice is to go into training mode, turn on CH, and then just practice CH 3B, 44bB. But, before practicing the juggle, just practice doing 44bB as fast as you can. That means tapping 44 and bB right after. It takes some practice, but it's possible.