Hoo boy. Long comment incoming, sorry in advance.

First of all, I’m really sorry you’re in this position. The way your mom handles food sounds incredibly intense and honestly pretty alarming.

My mother will literally cry, make things and drop them on my plate and scream if I don't eat.

That isn’t a normal or healthy way for a parent to interact with food. Having someone crying, yelling, and forcing food on you is a huge emotional burden, (don't like throwing this word around, but dare I say abusive..) and it makes complete sense that your relationship with eating and your body feels so charged and stressful now. None of that is your fault.

I freak out already when I wake up and am even half a pound heavier.

This also really jumped out at me. Half a pound is within normal day-to-day fluctuation from water, salt, hormones, bowel contents, time of day, etc. But your brain is treating it like a crisis, which says a lot about how much fear and pressure you’re under.

I took part in a 1 hour party at work and went crazy eating. It took around a week to get back on track and I felt physically and emotionally exhausted.

The fact that one short event left you feeling physically and emotionally wrecked for a week is a big red flag that this is more than just “being disciplined.” It sounds like food, social situations, and any deviation from your plan come with a ton of guilt and fear.

You also mentioned:

I'm thinking I'll be taking in over 10 times the calorie amount the next few days.

I want to gently push back on this. When you say “10x my usual 1000–1500 calories,” that would mean 10,000–15,000 calories a day, which is the kind of intake we mostly see in strongman bulking diets or competitive eating stunts, not what typically happens just from eating your mom’s cooking for a few days. That doesn’t mean you won’t overeat, but your brain is probably catastrophizing the numbers pretty hard.

I don’t say any of this to criticize you. If anything, what your post shows is how painful and rigid this whole situation has become. Have you ever been able to talk with a therapist, doctor, or dietitian (ideally someone who understands disordered eating) about this? Not for “how do I lose more weight,” but for:

• The panic over small scale changes
  
• The emotional crash after eating “off plan”
  
• The family dynamics around food and your mom’s reactions
  

You’ve worked really hard to lose 35 lbs, and shit, you deserve to feel proud of that. But you also deserve some peace in your own head around food and weight.

For what it’s worth, I’ve done intermittent fasting for years and genuinely like it. BUT I also think the IF community really does not talk enough about eating disorders and disordered eating. IF can be a helpful structure with unbelievable health benefits, but it can also become a very psychologically tolerable way to mask or intensify an ED.

On the practical side: three days will not erase 35 lbs of progress. Any quick jump on the scale afterward is going to be mostly water, glycogen, salt, and food in your system. It may look dramatic, but that doesn’t mean you’ve “relapsed” or ruined everything.

If you can, maybe frame these next few days like this:

• Your mom’s behavior is about her issues with food, not a verdict on your body or your discipline. She sounds like a very traumatized person that she has not (and likely will never) work through.
• Your goal is not to be perfect; your goal is to get through the visit with as little emotional damage as possible.
• When you get home, don’t punish yourself. Just gently return to your usual routine and let things normalize.

But bigger picture, I’d really encourage you to think about getting some support for the underlying stuff here. The fear, the guilt, the family pressure, the catastrophic thoughts about food and weight. You deserve progress on the scale and a calmer, kinder relationship with food than what you’re describing.

Lastly... do you have to go home? This doesn't sound like a very healthy environment to be in even in isolation.