I am so sorry for your loss. A sudden loss is always such a shock.
Getting him neutered and having some girls is a good idea. It is a long wait but a sow/boar bond tends to be more stable.
Keep up with weight checks to monitor his hay intake but otherwise keep him mentally stimulated - lots of hiding food and encouraging foraging will keep him occupied
I’ve added a guide below to help further
Looking After a Bereaved Guinea Pig
Getting him neutered and having some girls is a good idea. It is a long wait but a sow/boar bond tends to be more stable.
Keep up with weight checks to monitor his hay intake but otherwise keep him mentally stimulated - lots of hiding food and encouraging foraging will keep him occupied
I’ve added a guide below to help further
Looking After a Bereaved Guinea Pig