Pumping Help

Hey there! So I need some help...my baby turned 3 months old last week, and still eats every 2-2.5 hrs (I attribute this to him not taking long naps, as he isn’t a great sleeper in general). He also wakes up 2-3x a night depending! My question is, when can I find time to pump so I have some frozen milk?! In the beginning it seemed easier and now I’m at a loss for what to do and make sure he has enough milk for his next feeding! Trying not to stress it too much, but I need to know I have a security blanket in the freezer! Thanks!!