7 mo - suddenly taking short naps

[MumofOne111111]

My 7mo son has always been a good sleeper - he sleeps 12 hours at night with no waking etc

He used to take long naps but for the last week his naps have suddenly become 30 mins or less.

Ive tried keeping him awake longer/shorter etc - he always goes down for them but won’t stay asleep

Is this a 7 month sleep regression?

I am struggling to know what to do!!

My first only ever did short naps

Never did long ones. Not sure of a answer because it's really hard when they don't but I do think it's common