Exclusively pumping

For those who switched to exclusively pumping, can you tell me your reasoning and was it better? I basically EBF with one bottle of formula/breast milk before bed. He seems to be on a nursing strike and only snacking throughout the day. I’m an anxious person and it makes me feel like he’s not getting enough. I almost want to switch to pumping so I can see how much he’s eating…should I? Or just stick to breastfeeding?