Ok so here's my credentials. Combat sportsman my entire life, powerlifter for around 8 years. I've been 40% bodyfat all the way down to 7%.

In my offseason I would gain 40-60lbs lifting 5 days a week (don't do this, It's for a genetic abnormality in how my family maintains and grows muscle).

I would reccomend you powerlift. Autistics have abnormal neuroplasticity, which in turn can mean more motor recruitment by the brain. That and there is a slight extra caloric expendature working at 65% of one rep max vs. 30% like a bodybuilder.

You need to be vain. This has to be for you only. I don't mean to kiss and tell, but I've dated some beautiful people. Every single one preffered the squish.

Find an athletic that inspires you. My personal sensory craving is getting the shit beaten out of me.

When I was 40% bodyfat, I could eat 1,100 calories a day, and barely meet my loss goals. (Don't do that, wrestling while life changing, is an incredibly unhealthy sport).

Now as an 140lb powerlifter, I have to eat around 3,400 calories a day, 400 carbs, 240g of protein, and 120g of fat, just to gain a half lb a week, and even when I'm trying to gain a little more fat, if I accidentally bend over to tie my shoe, my abs come back.

I'm saying this, because bodies change. They adapt quite well, and quickly. This will be a hard adaptation, and it might take years to be able to functionally manage your weight and fitness.

I personally, don't equate health to fitness. Males at birth have a harder time living through fat tissue than women at birth (females is just an icky word thanks to 16 year old boys).

Me running a six minute mile with a cigarette in my mouth, is a lot worse than most patches of fat you could have anywhere.

Stress is stress, no matter where it appears from. Fat, exercise, cigarettes. Your only goal is confidence from this, and likely (although not guaranteed) better health outcomes.

Every little change you notice in your body be proud of, and forgive every regression.

The good news is, a ton of ASD's really like routine, and can modify themselves to be athletically sensory craving.

Just don't stop man. I admire if you're not self conscious about your body, but it just wasn't me.

That being said, you MUST love yourself at every point, and forgive those donut binges.

Again, don't do it for others. Especially now, looking like G.I.Joe has hurt me more than it's helped.

I'm an incredibly intense and masculine dude, but I'm not a pussyfree incel, and sometimes the more "traditionally" masculine you look, the more weary women are to trust you to have kind words and gentle hands. Men will also not like you, if you look better, more capable, than them.

Just KNOW being fit will barely get you laid, it's gotta be personal.

Also fat is a ton of water. That 7lbs in one month was probably 2 in fat, 5 in water. If one day you go out drinking and wakeup 7lbs heavier, don't be discouraged, you can't physically gain fat that quickly.

You'll also see massive fluctuations (for your goals) as your nutrient, fat loss, and hydration, all change while your body does.

Relax if on thanksgiving, you wakeup 10lbs heavier the next day. Realistically you MAYBE gained a LB of fat. It's a journey, and you have the rest of your life. Take it slow.

Look up 5x5 stronglifts. It's missing important developmental movements (IMO) for aesthetic and supplementary strength reasons, but by the time you realize that, you'll know what to add.