If formula feeding they make these:

https://www.amazon.com/BabyEXO-Temperature-sterilizer-BPA-Free-Protection/dp/B07QJBLVRX/ref=mp_s_a_1_29_sspa?dchild=1&keywords=baby+formula+bottle+water+warmer+electric+teapot&qid=1601822318&sr=8-29-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzU1pDSjlSQ0ZYVkdaJmVuY3J5cHRlZElkPUEwMzQ0MzE2M09FRjdQOEZJVFgyRSZlbmNyeXB0ZWRBZElkPUEwNzk2MzM2M0g0RDhUU0xPWEUwUCZ3aWRnZXROYW1lPXNwX3Bob25lX3NlYXJjaF9hdGZfbmV4dCZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=

Life saver when making 2 bottles every 3 hours for the first bit.

Also parenting newborn twins solo would be a nightmare, I couldn’t have done it by myself. No way. Just helping her out in anyway you guys can both physically and mentally. The first few months mentally were hard for me. The first few weeks of maybe 12-15 hours of sleep a week wasn’t good on me. One of our twins was colic. Constant screaming and crying that you couldn’t calm. It can break you down, so something to pay attention to is their mental health as well.