Hi Katie and welcome to the forum and keto lifestyle. Snacks in the beginning especially are okay. But it’s best to try and eat enough at a meal to carry you to the next. The snacking habits we develop eating the standard American diet are usually carb/sugar cravings because your blood sugar is dropping between meals. These habits die hard. Your body doesn’t really need the snack when you’re eating enough fats or burning your own fat when adapted to do so. A little rumbling in your stomach is still going to happen sometimes but not the “I need ______ and a cup/can of ______to get through the afternoon.”
You must have noticed an increase in energy after a while eating low carb? When your stomach is making a little noise instead of interpreting it right off as hunger and need for a snack try drinking a big glass of water, or some green tea, and maybe wash down a pinch of salt. If you’re truly hungry in 15 minutes have an ounce of nuts or cheese, some salami or pepperoni, olives, a pickle, celery and cream cheese or whatever. Fatty and small is best. Salty is good too. And some find celery good because the fiber hangs around in your stomach helping you feel full. But try to work towards no snacks.
Your next goal might be eating two meals a day instead of three once you’re able to go without snacking. I do well on late breakfast and early dinner. I often make a thermos of green tea for the in between meal time.
Keeping your insulin as low as you can for as long as you can is the goal with minimizing the hours and frequency of meals and eliminating snacks. Insulin is the fat storage hormone and that’s why we try to minimize triggering it’s release. It comes easy when you stop eating by the clock and focus on eating when you’re truly needing food to refuel and not for oral entertainment. I’m not saying that you’re doing that but I think most of us did, pre keto. Snacking is a big part of modern culture. I wish you great success with the keto lifestyle. 