Don't kneel on the bottom. I can't remember the last time I kneeled on the bottom.
... I'll bet it was back when you had a total of 0-24 dives ... :shocked2: ... which would explain why you can't remember it ...
It ain't exactly fair to hold a new diver up the standards of an old diver.
Fortunately, I can remember when I had 0-24 dives ... and I was kneeling on the bottom from time to time. Trying not to ... but let's face it folks, most new divers need a bit of practice before they get to the point where they're acclimated to not wanting the "gravity" and vertical orientation they've been accustomed to since birth.
For the record ... when I was in my OW class, I needed 48 lbs to sink in a 7 mm farmer john. Now that I have a bit of technique I've reduced that to about half as much weight ... but I had to learn how to (a) breathe without cavitating the sides of my tank, (b) descend without unconsciously finning myself upward, (c) empty my lungs ALL THE WAY on descent.
Sure ... your instructor can tell you all those things in class, and even make you attempt to do them as part of the training ... but we're not all rock stars, and some folks take a bit of time developing these habits. As you do, you shed weight you don't need anymore.
For the new diver, the important thing is to learn what you need to do and to dedicate a part of every dive to honestly trying to improve your technique.
Over time, you'll get more relaxed ... and that alone will resolve lots of the typical newbie blues that all of us experienced back when we started diving ... even those of us who started so long ago we don't remember it ...
... Bob (Grateful Diver)