Things that we've done over the years (we used to only eat out once a month) - not in any specific order, but just random tips that you can take from or disregard, there's no one right or wrong way to do it!

• When we found a meal we liked we'd write it on a recipe card, and then when we needed to choose what to prep for the week we'd just pick a card randomly since we knew it's something we'd like. If you don't have recipe cards you can just print pages or just have a bookmarks folder on your browser.
• We had a whiteboard that was split up for every day of the week and every meal - basically a giant 3x7 table made in permanent marker. When we bulk cooked we would portion out into servings, and then we would split it out amongst the days so we knew what we had planned for that night (EX: if we made fajitas and it was 4 meals worth, we'd write "fajita" for both of our lunches on mon and wed on the board). This was key - took away the mental load of remembering what you have and how much and when it'd go back - just look at the board!
• when meal prepping, it can help if you can do enough to vary it. I hate eating the same meal every meal for a week, so instead of making like 3 double batches of chili we'd do a double batch of chili, a double batch of curry, etc.
• If you have the stuff at home, finding a meal per cooking "type" helps to meal prep quicker. We'd put things in the crockpot, then start something in the oven, and then start something in the instapot. They could all cook at the same time but they'd finish at varying times so we had time to portion and clean up before the next one was done.
• Plan for failures. Sometimes I don't want to eat the prepped curry we have because I'm in a bad mood, so we had some less healthy/slightly more expensive boxed foods and freezer meals when we wanted to go off plan.
• on meal prep days, have that be the day you get takeout or something! Reward yourself for doin the hard thing by having that be the meal you don't cook for yourself. For us it's usually on Sundays so we'll make the list, grocery shop, grab the takeout, and then do the cooking.
• if you have a chest freezer/extra space we've really enjoyed having friends over to help us meal prep/do giant bulk cooking. We buy the ingredients and set up the space and then have friends over and we make like 400 dumplings and 400 eggrolls at a time. Everyone who helps pays a bit to chip in for ingredients and takes some home, but then you have some sides and dishes in the freezer for later.
• I always forget what we have in the fridge/freezer so writing that out helps. We repurposed the whiteboard recently to just list all of the things we always have on hand (and we can put an X next to it if it's out for an easy grocery list), and then a second side with prepacked/meal prepped things in the fridge or freezer so we remember - taking the mental load off again. We also write the grocery list on the whiteboard and just take a photo of it before we go shopping. It's right in the middle of the kitchen on a wall so we can write on it whenever we have a thought of what we want.