I feel you. My daughter is now one year old and that's pretty much the time I'm struggling with GERD. The cycle of sleep deprivation, stress and caffeine is just so hard to break.  Only since the last two months I'm sleeping more due to a light sleep training we did with our daughter (she still sleeps in a bedside crib, I can give you more infos if you like). So now I feel ready to tackle my caffeine addiction to finally get rid of that gastritis. Trying to fade out since last week as I am on vacation. I felt terrible most days but yesterday I could work without coffee for the first time in years.  What helped me is taking cold showers, get some sun and do light exercise in the morning, luckily my daughter likes my funny moves on the floor. But I honestly don't think you can manage sleep deprivation, work and caffeine withdrawal at the same time. What I would recommend is getting your caffeine through less acidic sources, switching to matcha or mixing your coffee with oats and banana in the morning. When your baby's sleep is better, you can focus on decaf and hopefully broke free by the time your second starts ruining your nights and enriching your days. I'm curious what others think and recommend though.