I've got a DS who is 4.8. Started reception in September being just four (August born).
He was never keen on anything to do with pens - not keen on drawing, tracing lines, writing. Generally, fine motor skills are not 'his thing'. For comparison, DS2 who is 1.6 is able to put a straw in a small pack of orange juice and will also help himself confidently to his favourite, sliced salmon, straight from the pack if mum is not quick enough (strange boy, I know....).
Anyhow, DS1's teacher asked us to try to develop his grip strength and gave us a website with some exercises. We are trying, but with both of us full time working an DS2 around (who is walking / climbing) and a general liability, it is tricky to find the time!
So please tell me about your reluctant writers: was there a time when they became a bit keener? What helped them? Did their grip strength just develop automatically?