You can change the number of rings you're juggling without stopping by putting a ring around your neck, or taking a ring off your neck.
- Start a pattern by juggling a lower number of rings, then changing to the pattern for a higher number and taking a ring off your neck when you have a free hand.(video)
- Put a ring around your neck and continue juggling in the pattern for a lower number, then switch back to the pattern for the higher number.
- Put a ring around your neck, but keep throwing like you would if you were still juggling all the rings. Then take the ring back off your neck when you have a free hand a few throws later.(video)
- Put rings around your neck by doing pancake neck catches.(3 ring video, 5 ring video)