I’m sorry to hear about your dad. I’m sure that’s very hard and sad. 
Laura what to do you do to stay sober except trying not drink? Cos that won’t get or keep any alkie sober.
You gotta do meetings, read quit lit, put those sobriety podcasts on 24/7, engage here on this forum. You gotta absolutely flood your life with sobriery content and wisdom and make that change in every aspect of your life at the same time. If you know you drink on day four, you change your routine on that day, do something completely different. If you have friends who make you wanna drink for whatever reasons - avoid them. Movies songs fav pubs restaurants - avoid! Change ppl places and things.
Resources for our recovery
Pick three things and stick w them. Then mix and match once you’re through w a few.
Your #1 tip for sobriety (over 2 years sober)
Here’s what some ppl can tell you about how they got to where you want to be.
Lastly, have you considered seeing a therapist to talk about life and the reasons why you drink? This will only work when you’re sober tho.
Best of luck. It can be done, but you gotta do it.