36w4d movement

So I did the whole kick count thing early this morning although it took some time he did 10 movements/kicks in 2 hours. However it hasn't been as strong as it usually is. The last couple days movement has been weak and not as consistent. I notice he goes much longer periods (3-4hrs) with minimal to no movement at all. I know he's running out of space but does anyone know if this is normal and ok at this stage?

Any input would be appreciated.

Thanks