This maybe not what you want to hear but I will throw it out there anyway - do you not think that 240lb's when you are 55 years old with abs showing is already a pretty good Bodyweight to be at anyway? I'd call that a pretty Solid, Muscular and athletic bodyweight especially when you are 55 years old - Hell at any age its good. I ask this because the heavier you go the more unhealthy it is for your Heart because its being taxed more heavily the heavier you get. I know its nothing in comparison - but at 5'8 I peaked at 220lb's about 6 months back and to be honest it just felt like one big effort in every single little thing that I did, often out of breath and just feeling heavy all the time. I can't say it felt great tbh - it made me wonder how the hell guys at 250lb's plus handle it all the time or even 280.

@Gotem69 @randomdude and @RobertB80 already dropped solid advices… but if I can add my two cents, brother…

At 55, abs showing, eating twice a day, you’re leaving free muscle on the table. Straight up.
If appetite is your bottleneck, you don’t need to “try harder” … you need the right tools:

IMO…MK-677 (10–20mg/day)
Turns appetite from “ehh” into F E E D M E in about a week. Keeps IGF-1 elevated too.
Just watch water retention. Could use some GHRP-6 (100–200mcg pre-meal)
Old-school, dirty effective. Hunger hits like a bus.
If you actually want to grow at 55, this is the cheat code.

GH alone won’t do much without FOOD.
GH is the spark. Calories are the gasoline.
Even three clean meals + a shake would make a difference for you.

And don’t fear the “fat guy inside,” man …
you’re not 27 anymore smashing Little Debbie’s in the dark.
You train, you diet, you move, you use gear smart. Your metabolism isn’t the same guy from back then.

A little structured eating + an appetite booster = clean muscle, controlled fat, steady progress.

Use it or toss it, brother man … but if you run MK or GHRP-6, you’ll be hitting me in a month like:
“Panda… I’m hungry as fuck.”

Start with 4 meals a day to kick it off eat your body weight in protein light carbs and low fat vegetables 2x a day oatmeal with breakfast for fiber or take a fiber supp. Make sure you're hydrated

Drink a bottle of water first thing in the morning then mix what I typed below all together with another bottle of water and chug the bottle to.
Make sure your digestion is in line
Apple cider vinegar 2-4 ounces
Lime juice 2-4 ounces
Probiotic capsule
Inosotol supplement get the tabs one am one one with 3rd meal eat pineapple with one of your meals later in the day helps with digestion and get some kambucha and sourkraut I can't stress enough getting your digestion down in line.

That's as simple as I can make it without getting into exact details of diet but I don't know what you're allergic to or how your digestion is and what proteins you digest well try chat gtp for a good diet and adjust it to your needs ai makes things pretty simple now if you haven't been in the game long. I truly only know what works for me personally so if you ask me for advise other than this I can't help you lol example
You may like ground beef i don't bc I don't digest it well so i do fish, chicken, eggs and yogurt lol

Try some calorie dense foods like peanut butter and whole milk. Might help with the mental side of not eating a large amount but getting the calories in.

If you’re working out religiously and on gear alongside hgh then you should be fine to eat more. Without fuel you can’t train properly. That fat guy you speak of is gone. He didn’t train and ate to feed the same hole that training fills. Start with a cheat meal or day and go from there. If you stick with training and your cycle you’ll be fine. “Do the thing you fear and the death of fear is certain.”