The most important info is I think how much does your boy weigh?
He should be getting around 10% of his body weight. How long have you had him/has he been eating the 90g weaned?
It sounds more like he's looking for food to me. My boys will definitely be alert and ready to go when they know a meal is on the way soon.
If he's already on the lean side, weekly meals won't hurt for now. Bi-weekly meals are recommended if it looks like he's getting a bit more pudge to him. If he's pet only, then I would keep him on the leaner side.