More night waking

Amber

My little guy will be 6 months on the 28th. He has generally been a good sleeper and was only waking once a night and taking a full breastfeeding session. The last few days he's been waking twice, taking a full feed each time, and harder to get back to sleep.

I would think it was a leap but it just started a few days ago and the app says he's been in a leap for weeks.

Is this a growth spurt, sleep regression, or mental leap?