How to tell my family and boyfriend that I'm leaving for the military within the next few months?

So my family and boyfriend know that I am planning to join the military. However they think that it'll be at least 2 years away after I get my 4 year degree. I have been looking into joining sooner and have been thinking about it a lot. Even with only having my associates degree i can join and be either an E2 or E3 and already be making more, I will also be able to obtain my bachelor's degree while I'm enlisted so i'll still be getting education. The only thing is lately my boyfriend has had some medical issues going on and it does scare me to not be there for him when he needs me. As well as my dads having health problems and there is talk about having a few surgeries in the near future. One thing that I do know is that if I left I would be able to have my dad and on my military insurance and at some point my boyfriend as well as we have talked about getting married some time down the road. any advice on how to tell them that I am thinking about going at the end of the year or at the start of next year.
How to tell my family and boyfriend that I'm leaving for the military within the next few months?
Post Opinion