How old are the kitties?
I was told by people I trust to allow them to eat as much as they can whenever they can for up to the first year.
Their activity level is very high, they are growing, and their tummies are relatively small, so packing in nutrition helps maximize bone density and organ/muscle growth. Its also one of the reasons the higher protein and fat kitten diets are made specific for them.
If its after that, I would check out amazon for an automatic feeder.
The biggest issue with schedule feeding is that when they do get hungry, they are likely to complain to you. You may also be off by an hour or two, which they likely WILL notice.
The auto-feeders will give precise amounts at precisely the same time, and since its automatic, you could even have it feed them five times a day if you like, to maintain a level blood/sugar level and avoid gorging.

If you have a lazier kitty or one that inhales food like a vacuum, what you can also do with the dry is to get food balls and fill them up and set them out twice a day. They have to swat at it and roll it around to get the food out. Entertaining toy for them, and it can take an hour to get all the food out. Downside of course is that they get kibble in the area, but not a big deal if you have a low traffic tile area somewhere.
Best of luck!
