Too much paci?

My 3 month old is generally a good sleeper. He’s at the stage right now where he wakes up at the 40 minute mark during naps. However, if I go in and give a pacifier he can sleep another 40-50 minutes. He goes to sleep around 7:30pm and almost always wakes up at the 3-4am mark. I wait five minutes or so, then I give a pacifier. He generally falls back asleep until around 5:30, and then I pacify him until 6am (DWT)

Are we relying too much on the pacifier? Is it hurting his sleeping habits? Should I just let his naps be shorter? Right now we are doing between 75 and 90 minute wake windows (I follow his sleep cues)