Gonna answer this from the perspective of anyone, as I would guess the OP probably figured out some of these already. Here are some, in no particular order:
Clothes
Get into the habit of checking out clothing sales.
Have some clothes the next size up, just in case. I once heard of someone who used Postmates to to buy and get delivered a single pair of underwear, and probably paid $50 for it. Don't be her.
This will probably be the one of the bigger ongoing expenses.
Skip thrift store clothing. Even if something there is your size or the next size up, everything they have is tacky as hell. There's always a reason those items are lightly used even years later. Someone got rid of it, probably because it looks awful, they almost never use it, and it was just taking up space.
If you start out small, as in below XL, or below waist-size 38" for men, and probably I don't know, maybe around size 12 or 14 for ladies, the usable weight range of each size is pretty small, so you'd have to get a lot of new clothes.
At a certain point though, you'll need all that much more weight for each extra inch of size, so you won't be going through clothes at much.
Perhaps obviously for belts, you will want to pick out belts where it kind of barely fits while on the smallest or second smallest hole, since that will give you some additional length.
Shoes
Good news is, I doubt shoe size will change much, but it's something that may occur eventually. But odds are, you do get new shoes from time to time anyway.
Consider phasing out shoelaces in favor of slip-on and side-zipper shoes. It's annoying to tie shoes when you gut gets in the way, as well as tying it again as it comes loose over the day. Shoelaces are better if you go running, but let's be real, you're probably never going to run again. There are many stylish options that don't have shoelaces.
Furniture
You probably won't break furniture anytime soon, but if you have any weaker furniture out there, such as those plastic chairs you sometimes see, you probably know it. Plan to replace them, eventually.
You may need a new desk chair eventually. Look for a model without arm rests, or one where you can remove the arm rests.
Small Diet Changes
I won't ask you to regularly eat food you don't like, even if it's higher calorie. For example, some folks just don't like cream and sugar in coffee. But at the same time, try these small variations and see, because you might like it!
Some sandwich recipes work with mayo - if so, maybe try it it with a little more mayo. It's really calorie dense, and may not affect the taste much.
You don't have to give up salad either, and it may be yummy, particularly if you add chicken, bacon bits, and/or creamy Caesar dressing (which is also calorie dense).
Extra cheese on a sandwich too, possibly.
Keep snacks near your desk at home and at work. That will help for those times when you feel like you could eat something, or you're craving something, but maybe aren't in the mood for elaborate cooking. And you will get those cravings more often.
Volume discounts are king, particularly if it's something that either doesn't spoil quickly if at all, or it's something you use a lot of. A 2 lb bag of M&Ms is cheaper per ounce than any smaller package.
Don't skip vitamins, even if it's in the form of multivitamin pills or within nutritional shakes (like Ensure Plus/Equate Plus). You'll feel worse if you skip them, and that's if you don't develop problems.
Try to avoid drinking too much liquid at first when it's a meal time, maybe just enough so your mouth doesn't feel dry, because you may find yourself able to eat more. Afterward, you might be surprised at how much liquid you can still drink.
Don't try to eat a significantly larger amount of food than you've done before. For example, if you struggle to eat 3 pieces of pizza, trying to eat all 8 will not work. Then, you'll probably get disappointed when you can't finish it all, or you get sick and even throw up. That's very bad.
Instead, try to eat a little more than you ate before. It'll get easier over time, and not as much time as you might think, and then you'll be able to eat slightly more after. I remember a time when 3 slices was a challenge, but now, 4 slices is quite easy, and I had 5 in a single sitting, the other day. Small steps.
Other Small Aids/Changes
Bending over to pick up something from the ground will get more difficult and annoying, and you will not like doing it, the heavier you get. You want to avoid dropping items on the ground, but it happens sometimes.
- Get a dustpan with a long vertical handle, so you don't have to bend over when you sweep the floor with a broom.
- Consider an extended grabber, the way some groundskeepers have to pick up bits of trash.
End
Anyway, just what I could think of, off the top of my head right now.
12 months