I struggled with disordered eating before HRT. A few weeks in, another trans girl explained to me that the body needs energy to do its thing. It's basically second puberty and you know how much teenagers eat.

I was like you, being able to eat a couple of meals and be satisfied. Now, I snack more. I also eat smaller meals as it takes less to fill me up. I'm also ~6 months on E, so I've lost some muscle mass. Despite my new eating habits, I've been able to maintain around 70kg at 180cm tall. Meanwhile, my body's been burning the fat buildup from T and packing it onto my butt, thighs, and chest.

If you want my two cents, try snacking more and just eat when you're hungry. You don't have to eat until you're full, just until you're not uncomfortable anymore. Trust the process and let your body do what it needs to do.

If you start going in a direction you don't like, you can stop. You might also consult your doctor for advice

Cis woman here, married to a trans woman, so I'm familiar with both sides of this puberty: it's okay to eat a little more. You're basically a teenager, and your body needs energy now. You are going to go through a fair bit of change and it's important to have the calories needed to do so, especially if you're starting out without much fat in reserve. Your body is going to redistribute where fat accumulates on your body, and people with estrogen tend to have a higher body fat percentage than people with testosterone.

If you have a therapist (gender therapist or otherwise) I'd definitely consult with them about your anxiety around this, since you mentioned the possibility of disordered eating. If it helps, talking to your regular doctor or endocrinologist can give you other professional perspectives on this as well.

Good luck! And take care of yourself ♥

You need food to grow tits

I am just barely ahead of you at 4 weeks and I noticed something similar with me. I'm very similar dimensions; at my lightest I was about 57 kg and 176 cm.
Once I started taking E, I was hungrier longer and it took more to satiate me. Now I'm around 60-62 kg, which is where I've been in the past, so I don't look all that different.
I noticed my legs feel a little squishier than I remember. But that could just be me looking for things that aren't there. I think it also moved some fat around in my face as my cheeks feel a little thicker/puffier than before. It's taking some getting used to.

Hey, just wanna chime in with my experience, 6 months on HRT. I started at 183cm/61kg and HRT made it a lot easier for me to eat regularly, I didn't eat breakfast most days before. Now, I'm eating a hearty breakfast and lots of snacks inbetween (almost didn't snack at all before) and I LOST weight, last I checked was a month ago or so at 59kg. I figure most of that was muscle though, my thighs grew a bit. So eat away, I'd say. I'm eating a good 25% more than before HRT and am barely keeping my weight.

I'm a little over 6 months on hrt and haven't noticed any appetite changes. I've actually been eating far less and more sporadically. I was eating for performance reasons pre-transition, so I'd say I'm eating more normally. How are you receiving/dosing your estrogen? I use patches, but I could see fluctuating hormones from injections/pills affecting appetite.

Progesterone increases appetite, estradiol decreases it