AV, try not to be too hard on yourself! Conveniences are totally appropriate when you're making the transition to life with a new baby, and the upfront costs of reusable items will end up having a very, very low cost per use.
I bought all my produce without using any plastic bags yesterday. I ended up using one bag for bulk after my darling (*cough*) son got cranky and threw a jar I'd already filled with cashews out of the cart, shattering it. Grrr...
Made asparagus soup with dinner last night. I'd been saving the woody ends in the freezer, then boiled them with some homemade broth and threw it all in the blender with some cream. Delicious! I also made double the amount of quinoa I normally would in the Instant Pot and froze half to reduce the energy useage.
I signed up to participate in a "Refashion Exchange" where you send an unworn garment to another sewist and they turn it into something new and send it back to you, and you receive one from someone else. The gal who I'm sewing for sent me two boxy dresses that I was able to turn into a nursing-friendly dress for her and a matching baby dress. There's some waste inherent in cutting up a perfectly good (if unworn) garment to make something new, but the baby dress helped reduce that and the rest will get cut up into squares for a future postage stamp quilt.
* BIG KAHUNA: In honor of America's withdrawal from the Paris Climate Accords, I switched to our electric company's "Green Rate." For a 20 percent premium, all of our electricity will be sourced from renewable sources. We have a very low and ever decreasing electric bill so this will not be a budget buster for us. Politicians are (apparently) useless. Personal action is paramount.
Way to go! We don't have this option where we live or I'd do it in a heartbeat.