I’m starting my transition soon but it has me a little concerned about next time I see my family

Near the end of July or start of August I’m likely going to be starting HRT (could be later depending on when I am able to freeze my sperm). It’s really exciting for me though there is still a month to wait in which time I need to get a blood test to get my base levels.

That said it means that by Christmas, which is when I will next see my cousins and grandparents, I am going to have been on estrogen for almost 5 months. I have no clue how noticeable the changes are going to be or if they would be easily noticed by people who only see me a few times a year. I don’t think they’ll be transphobic or anything, but I feel like I don’t want to come out to everyone in my family yet (obviously my mind might change by the time it’s relevant). It’s especially awkward because it’s going to be summer so wearing multiple layers to cover up a bra or any changes is not really a good full time solution.

I would definitely appreciate any advice you have or any I formation that might help give me an idea of what to expect.