TBH, at that age, they can get through the night without a bedtime feed. If he's skipping it, you can either keep offering in case it's a phase, or take advantage of the opportunity to eliminate it now while he isn't wanting it. I'm not sure what time bedtime is, but if it's a couple hours after dinner, you can always offer a snack and a sippy of milk before bedtime.
Neither of my kids were interested in a bedtime feed shortly after they turned 1, so I just got rid of it. They adjusted their calorie intake during the day and didn't have any EW or NW within a couple of days (I didn't feed at night if they woke, just did WI/WO).