HP 678 cartridge only prints 6-7 pages after refill.

[PrinterOwner]

Hello,

I have refilled my HP 678 cartridge for the first time. In doing do, i performed the following steps:

1. Took the cartridge out of printer.
2. Removed the cartridge label.
3. Dropped the ink slowly & gradually onto the sponge (instead of injecting it in order to avoid physical damage to sponge)(motivated by the mechanism of Continuous Ink Supply System (CISS)).
4. Pulled back some ink when the cartridge began to overflow.
5. Put the cartridge label back on top of the cartridge.
6. Put back the cartridge into the printer and tried taking printouts the next day.

The issue I'm facing is that I'm able to print only 6-7 at a time. From 7th-8th page onwards, nothing is printed.

I have even tried pulling the label up from one of the holes to allow unrestricted air passage into the cartridge. But no breakthrough.

When put/rubbed against a napkin, ink flows out of the cartridge smoothly and from the entire width of the printhead.

Any suggestions?