My daughter get a "mixed" shot of Humolog & Novoli N in the morning adn seperate shots of Humolog & Lantus in the evening. She wants to spend the night with her grandma but her & her grandma have not been able to get the hang of mixing the morning shot. They do fine with the single insulin shot. I need to know if the morning shot can be done with 2 seperate doses and if so, does the dosage need to be adjusted.