Hello, I'm looking to achieve a look with very large overfilled lips. I've been getting aprox 1cc per lip (2 total) of Juvederm every 2 weeks for the last few months and I'm up to around 6cc per lip (12cc total). They still look good, feel a bit firm after fills but nothing concerning. However, my injector has said it's getting harder to inject and hesitant to do more. Is it safe? Is resistance ok to keep filling? Are there any concerns I should watch for? Thanks!