So both my guinea pigs are around 9 months old- I've been feeding them Oxbow adult guinea pig pellets since they were 6 months- the timothy hay ones. However, I recently carelessly ordered the young guinea pig pellets by mistake which are made of Alfafa hay. I'm aware these aren't the best to feed for adult pigs due to the calcium. Is it okay if I still feed them these until they run out? Or should I rebuy the timothy pellets. I'm a little tight on budget and don't really want to waste the money, so I'm lost on what to do. Any tips would be helpful.