I have no issue with someone taking Pepsi. HCL, vegetarian digestive enzymes / proteolytic enzymes for gut health. Another consideration is high doses short term of glutamine (per Poloquin).
Some other things to be aware of:
Typically eating to out in tissue can be burdensome to your stomach. It’s a lot of food for a long time. Having breaks where you take time away from calories is an option. Having feeding windows is an option. Eating your food in smaller bites also. Last, bad episodes of vowel movements definitely could be an indicator that your stomach can not assimilate the nutrient dense foods you are consuming. Consider adjusting your protein and fat potentially.