Wanting to quit breastfeeding/pumping

My twins are 1 month old now, I have strictly pumped since they were born. We’ve also been alternating their feeds with my breast milk and formula because I’m not producing enough to feed both babies. BUT I am so exhausted with constantly pumping and taking care of both babies, it adds so much more stress and exhaustion on me. Every time I mention I want to quit, my husband always says “but think about how much money you’re saving us.” Which then starts making me feel guilty so I keep pumping...but deep down it’s seriously starting to take a big toll on me & I don’t know how to quit without him or others making me feel guilty 🙁 (& I have feeling when it comes time to purchase formula, there will be comments like “you should buy the formula since you decided to quit pumping”) 😥