Nursing strike?! Or not hungry?

Second time mom here with a 3 month old daughter. Taya seems and has been feeding every 2 hours for the most part and wakes about 2-3 times at night to nurse.

This past week when I go to nurse her after a nap, she has screamed after a couple sucks and refuses to nurse. I thought it could be gas so I have so drops coming in the mail.

Tonight she was basically eating her hand the entire drive home from my parents and still refused to nurse, but also overtired, so I put her down for a nap. My husband thinks she’s just not hungry?

Her wet diaper count has been great and she’s gaining weight well! I guess I’m just looking for reassurance? If I offer and she refuses, should I just let it go for up to 4-5 hours until she wants to nurse?