Help / Advice needed

[Zenturtle]

Are you sure you pumped your lungs completely full of air?
There are more people with that result who enjoy swimming.
If you can get some coaching that would be a bonus.
Not getting air easy can be a distraction that limits progress.

The difference with normal buyancy is not that great. If you spread the weight of almost half a head over the complete body, you are riding only 1-2 cm lower than average.