2 month old constipation

Ashley • Married 🍀 Son born 12/2/2017, Daughter born 1/17/2020

I have a 2 month old, we just changed his formula over to Enfamil AR two days ago & now he’s got a little bit of constipation going on. Hasn’t pooped in a little over 24 hrs. What are some at home remedies that you guys have done that have worked? I won’t do any type of syrup remedy. I’ve already given him a nice warm bath tonight and rubbed his tummy. I also just took his temperature rectally.