Kegging question

[Eccipoo]

So I kegged for the first time today which was buckin massively eggsiting. Apologies for the Easter joke

And I was wondering could anyone lend some advice on my regulator. Bought new from keg kingdom. And *i think* the pressure at the minutes at about 14psi. I'm leaving it at that for about 4-5 days and then I'll be dropping it to between 2-3 psi

When I turn the tap on the regulator to fill the keg with co2 it doesn't seem to even let me get the needle on the gauge to 2, nevermind to between 2-3. The needle seems to jump from 0-10(ish). Am I doing something wrong?

Photos of regulator and where my pressures sitting at at the minute


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