Master's courses by nature are time consuming. It's nothing like taking a study.com course. Expect to read and write a lot. I imagine an English degree will be even more so. But if you love the content it should be stimulating instead of a chore. The number of study hours will probably depend on how much background knowledge you have, how fast you can read/write, how much interest you have in the topic, etc. For example, every one of my classes requires two big papers - either research or essay. Most require at least 10 scholarly sources so it means being widely read. If you read and write fast you won't find this a problem. Something competency based might allow you to move at a faster pace whereas a school with set terms will keep you moving along at a steady pace and give you set deadlines. I highly recommend finding the right degree. Otherwise I can see it being pure drudgery. Pay extra and take more time if that is what it takes. Otherwise you'll be pretty miserable. Check box degrees at undergrad level are somewhat painless. For a master's, totally different.
MTS Nations University - September 2018
BA.LS.SS Thomas Edison State University -September 2017
BA.LS.SS Thomas Edison State University -September 2017