The timing sounds fine. 3 meals a day is what I always recommend (at least three meals) and meal splitting to keep the food fresh sounds reasonable..

I've always found meal times and routines are fluid. I mean, the way I fed 5 years ago for instance, is not the way I fed for the past two years. And now with only one cat, I was feeding her the same way I've always fed her, but lately she's dropped a meal, so she's now eating one less serving a day (but the same amount, the lost meal is made up for in other meals)

Feeding routines should be flexible.

To answer if he's getting the right amount, we need to know what size are the cans you are feeding? Continue to keep track of how much you are feeding, and keep an eye on his weight. Do you have a scale for weighing him? I weigh them weekly.

 

I kind of use Natures menu cans to do a rough estimate of how much to feed each serving. It says they hold about 85g online. So even if it isn’t Natures menu, I’ll measure it out by thinking about how much half a natures menu can is and give that amount and then the other amount later. That would be one serving for him.

 

Weigh them, then one can see if they are eating too much.
I simply set our scales to kg weigh my self holding said feline , then weigh me only and subtract.