It's related with porn education.
Many women believe that they need to practice this fast, high rhythm while having their partner's full lingam in their mouth.
As you can imagine, it's usually way better to be much more loving and subtler.
The first thing is that you don't actually need to move much.
You can for instance co up and down on his lingam very slowly with your tongue.
You can have his lingam in your mouth and then apply very gentle pressure with your lips in a soft and slow rhythm way.
The point is gentleness and love.
You know that already of course ;) - I just wanted to make sure that you understand that very often, it's this gentle, playful and subtle approach that will work way better!