A "Top Up" feature will be enabled very soon. In the meantime, here's what you should do if you want to increase your stacking amount.
Increasing your Stacking Amount
- Stacking Dashboard
- Select "Unlock Funds"
- Your STX should unlock 100 blocks after the end of the current cycle. This is typically one day.
- Re-delegate with the higher amount of STX!
Unlocking funds and re-delegating will cause you to miss at least one stacking cycle and associated rewards. Alternatively, you could create a new account in Xverse and stack from a second address without disrupting the original delegation.
Make sure to revoke your delegation 100 blocks before the current cycle ends to avoid waiting for another stacking cycle.