Please don’t let this worry you - you won’t find a long term owner on here who tracks it in that way. You don’t need to - simply ensure you aren’t over feeding their portions and then If one gets more one than then the other has chance the next. Veg and pellets arent their main diet and are merely supplementary.
The only food you need to keep track of is hay intake and that is done via their routine weekly weight checks.
Give the recommended amounts - one cup of veg per pig per day and one tablespoon of pellets per pig per day.
When it comes to pellets, it doesn’t matter if they don’t eat them all or indeed don’t eat any. They are the one part of the diet that they don’t need. I personally feed each of my pigs 8-10 pellets but only do it twice a week. I would go entirely pellet free but they do enjoy them when I let them have some!
Of course you don’t want one of them overeating pellets long term so you can use pellets as a Bonding time - hand feed them some pellets.
Weight - Monitoring and Management
Bowls for veg and pellets - they aren’t going to know whose bowl belongs to who and sharing is absolutely fine.
We actually dont recommend the use of bowls or hay racks/bags.
Instead scatter their portion of veg and pellets loose around the cage and loose in large piles of hay. This serves a few purposes:
1. Scatter feeding veg/pellets Means they both get equal chance of finding some rather than one eating faster than the other and then moving onto the other bowl
2. And this is important, foraging for food is a fantastic way to keep occupied and mentally stimulated. They are designed to graze and search out food and with it being hidden in piles is hay, it keeps them busy. Eating from a bowl is a mindless activity.
Same goes for hay, it’s more than food, it’s fun and loose piles make it much easier to forage and play in.
Long Term Balanced General And Special Needs Guinea Pig Diets
Weight - Monitoring and Management