Considering a full in 2027

I’m turning 45 this week and have had a pretty lackluster running year so far. I’ve done a handful of half marathons over the past 5 years. I have a buddy that will be turning 49 next year and he wants to do a full marathon for the first time and has asked if I want to “get into the best shape of my life” and do it with him. I’m not a huge cold weather runner so when it’s late fall/winter/early spring I’m not out much…. The run would be next year in June. Wondering if I could feasibly make it happen. I’m not very fast in general. I also don’t want to take 7 hours 😝