4 month sleep regression?

Tiffany

My daughter will be 4 months old on the 19th. She typically only wakes up once a night (between 2:30am-4am) The last few days she has been up around 12:30am and 1am also and seems more restless when going back to sleep. Is this the 4 month sleep regression? My wonder weeks app says she will be at leap 4 in 7 days. I know this isn't totally accurate though.

I didn't go through this with my son who is almost 6, so I am looking for some advice! Thanks in advance! 😊