Sleeping

My 8 month old has been sleeping a lot since she turned 8 months. She will be 9 months on the 25th. She will take two 3 hour long naps during the day & then she’s down for the night at 7:30 pm and wakes up at 8:00 am. Could it be a growth spurt? This isn’t normal for her she has always been a cat napper. I’m not complaining I’m enjoying the time for myself. Just wondering if anyone is experiencing the same?