Normal sleep for a 4 month old?

Kaitlin

My daughter has been sleeping so much she got her shots on Friday and I feel like he sleeping has changed since then, she will sleep for about 30 min every hour and then around 3 she will sleep for 2-3 hours and then wake up for about 2 and then sleep again for about 30 min eat her last bottle and then go to sleep for the night I would say all together during the day she’s awake for like maybe 5-6 hours. Prior to her shots she was still only napping for like 30 min and then had the one big nap but she’s doing them more often is this normal? Could it be a growth spurt?