I was always ORMphobic person and especially I afraid EF. This framework lets you think query DB is easy and you don't have to dig into details, but it always turns out you have to know how the DB works plus you have to learn how EF works internally. I am trying to stick with micro-ORMs, like Dapper or something like SQLBuiler. Raw SQL is no good too.
I would recommend dropping coffee for tea. Switch to tea... (sorry for mocking ;) ). Honestly, while real bean coffee includes caffeine, which energizes you for 30 minutes, it also includes theobromine, which would put you to sleep after 30 minutes; tea (black tea and earl gray) has caffeine only. Instant coffee with milk (like Nescafe decaf) is a good beverage to drink before the bed time, since it contains theobromine only
My story is similar. I also felt the burn out between March and September and decided to leave at the beginning of September. I felt like the work I do is boring, everyday standup meetings are annoying as well as planning, grooming meetings and all this things. After I left the company, I could not do anything productive for a few months, but now I am more productive. I am working on my pet projects, taking some time for walking and cooking, reading books, preparing for the interviews. Taking a few months off helped me at least feel much better.