hello, I have been giving my 3 squirrels mazzuri rodent blocks about a handful a day. The other two are fine but Clyde is losing weight his spine is showing a little. I do feed apples and sweet potatoes. having him this long I have never seen him this skinny. His top front teeth have recently also fallen out and they seem to not want to grow back. I do not have a vet in the area. Is there anything I can do to help him? He seems to eat his blocks fine. He is usually pickier with his fruit and veggies. Should I maybe try feeding him more fruit and veggies?