Hi Sbula.
I like to view these periods as "lapses" not "relapses", that way I find it easier to justify getting back on track.
Remember recovery isn't a linear process. You will have many bumps in the road of your recovery journey and it's important to realise this. However, it's really important to have a get-out plan, which will help you get back on track. Recognise your triggers, and the emotions, and be kind to yourself, but you also should recognise the destructive behaviours which are derailing you. When I've had a set-back (usually around when I have my fortnightly weigh-in, but other things cause it), I cut back and add in a little and work back up to my original meal plan.
I'm interested that you have highlighted that you're not underweight. It's a tricky one for teenagers, because your body is still maturing, and I would certainly trust what your health professionals are advising you. Bear in mind that when you turn 18, you will be deemed underweight, and therefore your current weight is not healthy. Many people don't realise that for most Europeans, a healthy BMI is between 20-25, the extension of 19-25 caters for ethnicities which have a lower bone density. As an 18 year old your BMI would be 18.2, working out as underweight. It's hard, and this is the same challenges that I'm going through right now, because I'm mentally and physically okay but below healthy. When you are below target weight your body by default will try and regain lost weight, because genetically it's bone structure and muscle definition is determined to be a certain way. This is why you require more energy, and therefore if you energy deprived you will revert to binge episodes.
If you're really keen to recover, I recommend slowly building up your intake to adverse the current lapse, and then working to gain the weight over a longer period of time.
I noticed a lack of carbs in your intake. I am currently working through issues with carbs, but I really recommend working on this. It keeps your weight low ultimately, and also stabilises your moods. It will also eliminate any binges that crop up.
Could you maybe start by adding in some porridge oats, or granola to the yoghurt you're having? That's something I did.
I agree, it's a great time of year for having salads - why not add some pulses as well, or some lighter grains.
I also recommend going along to a support group to help with motivation. I've started going to a beat group regularly, and find this really helpful in keeping me on track.
I also find having a list of motivational goals of why I want to recover keep me going when I have a lapse.
Hope this helps, feel free to message me if there's anything specific you want to know.
Keep going, and don't be too harsh on yourself when you do have a lapse. But remember to pick yourself up quickly.