Not sure why you feel it needs to be done every two weeks. And is there a reason, since most cats can be trained to use provided scratching areas. For instance, I have multiple cats, all with their claws, and they only get a trim when they start to knead me with their claws out.
It takes patience. You get your cat used to massaging her paws. Just do it with no intention of trimming the sharp tip off. And go for the sharp tip, as that is safest and you want to dull her claws, not cut them down too much.
Once she gets used to you handling her paws, you practice by pressing on her paw pads. Her claws will extend. But still, no trimming.
Then, with a special trimmer that you get that is for them, you massage, press on the paw pad, and perhaps try to get one or two claws trimmed per session. If you try to get all at once, she will struggle, and also remember, and fight you the next time.
And, when you only try for one or two claws, it is fast, and after several sessions, you get them all trimmed.