Those are some fine numbers so excellent job there. Just for random curiosity, how tall are you??
To answer your question, you should eat some calories when you wake up before walking the dog. I go through the same morning routine and have been forcing myself to drink some kefir, eat some skyr or something of the sort before getting to my proper breakfast. Dextrose is a better carbohydrate source for intraworkout than pop tarts or fruit snacks. You are lifting some serious weight (2x bodyweight on the deadlift and approaching 300 lb) so you also have to consider that you may need longer breaks between sets and maybe even between lifts. I'd also suggest trying out upping the carbohydrates to 300 grams and seeing how that works. This is some pretty solid progress. Can you post a video of your squats and deadlifts?