Sounds like a difficult decision Ria. I think because you care so much you feel as though he should be in a larger cage but then again he’s no doubt become used to his tank and it’s beautifully laid out and full of enrichment and he’s making no noises that he’s unhappy.
He may enjoy being around the Syrians as they tend to be more sociable and potter around their homes and if he enjoyed being around the dwarf sisters he may also enjoy being nearer the others but I’m kinda thinking maybe leave him as he is as he seems content already. Don’t think I’m providing much help to you decision making but I know whatever you choose to do will always be what you feel is for the best.
