V8 energy??

So I am having a lot of insomnia lately and cannot for the life of me sleep. Been going on for over a week now. I’m lucky to get 5 hours of sleep and am up at 5:30 daily. Between not being able to sleep and not being able to drink coffee; I’m dragging so much during the day. Around 1pm I am so exhausted… but have to keep pushing since I have 2 toddlers to keep up with and babysit 3-6 kids out of my home daily. I seen V8 energy drinks and thought maybe I could drink one of those a day to hold me over until I HOPEFULLY start sleeping again. It has 80 mg of caffeine and I don’t drink pop or coffee. I haven’t ever since I got pregnant; coffee literally just the smell makes me sick lol. Has anyone drank these or know if you’re able to? I have an appointment with my midwife on Wednesday so I’ll ask her about it as well.