Need advice!! Breastmilk to formula

Taylor
I need your advice! So like a few days ago, Sunday or Monday I slowed down my pumping and now Hudson is just on formula.. But I think I made the transition too quick and he has been SO cranky. Think it didn't settle well on his tummy so what should I do.. Should I try pumping and give him a few bottles throughout the day with 1/2 formula and 1/2 breastmilk like I was doing? Let him tough out his tummy ache, or try changing his formula to something more gentle? NEED YOUR HELP! What happened to my happy baby? 😢