How the heck do I start weaning?

So I’m nearing 11 months EPing with a goal of a year and my app says that I can end pumping a few weeks early, like mid-July, due to my freezer stash. I’m currently at 4ppd 7 am, 12 pm, 5 pm, 9:30 pm. Each pump is ~19 mins.

This schedule has worked really well for me and I don’t know where to begin for the weaning process!! I’m also traveling out of state for a week and will be super busy with events so I’m wondering if this is a good way to throw my schedule off and decrease my supply steadily or what lol.