Drop the juice and dextrose. Replace low-carb milk with heavy cream or half and half. Otherwise, drop in a scoop of protein powder if you can stomach it…or 1 cup of cottage cheese, maybe a tbsp of extra virgin coconut oil.
Your body’s ability to partition nutrients immediately PWO is the greatest throughout the day; take advantage of it. And the whole spiking insulin thing PWO is overrated in my opinion because of this fact.
You could also try throwing in a tbsp of natural peanut butter instead of the coconut oil.
I would focus on getting ALL your carbs PWO (assuming you are trying to get lean) and a huge chunk of your daily calories in this same window. Really, though, you just have to learn to read your body.