Reduced movements 39 weeks?

I know this sounds like a silly thing to ask but what exactly does reduced movements mean?

I’m 39 weeks and usually in the evenings my baby is pretty active especially if I lay in bed to go to sleep

This evening I am still feeling movements but it’s just not AS much as I’m used to.

I have a midwife appointment tomorrow so I will talk to her about it

But I also heard that sometimes ’reduced movements’ can mean labour is due to start? Which I’m hoping is the case.

I was just hoping for a clear answer as I don’t want to panic or overthink anything