You will have to obey the club currency rules for one thing. But as an early PPL I would suggest you are showing signs of possible over-confidence already.
>>>I still feel 'current' but I am concerned that I might be kidding myself.
How long have any fellow low hours pplers gone without flying,without refreshing with a FI?
I don't lack confidence when flying and am very thorough with all my planning/checks but I am always wary of over confidence<<
I have around 600hrs P1, but I am feeling rusty already 4 weeks after my last flight....
In your position I would try not to let more than 4 weeks go by without a flight