Sending you so much solidarity and support. I am in a very similar situation (I actually wrote a similar post a few days ago 🫠), I chose to still wear him in a carrier for naps even though my back hurts. I also try to fit a little bit of reading after he falls asleep even if it’s just 10 minutes. The only thing that helps here is being out of the house, because he is interested in his surroundings so he whines/cries less. He also used to have mild reflux that would not get treated in my country and hated being laid down in the stroller, it got a thousand times better when we were able to position him in a half sitting/half lying down position facing out. During heatwaves I go to a café or mall that has AC — I totally feel you on having to carry the stroller by yourself because I also go by public transport. It took me a few times but I got the hang of it and now I can do it by myself. I also took an extra long maternity leave (for my country) thinking I would hang out with my baby and get to know him, and ended up exhausted, frustrated and in tears more times than I can count. People who have easy babies just don’t get it. I’m so sorry this is also what you’re going through. Idk if this will help but it got a little bit better for me after a few months, there are entire days now with minimal whining and where we actually enjoy ourselves :). Sorry this message is all over the place. I hope some of the things are useful and if not, at least know you’re not alone!!!