Quoting Momma of 2.:" even if it is for like 15 minutes a day I guess. \Using sparkly crayons and glitter pens helps. Im ... [snip!] ... letters by the time summer comes, I want him to go to kindergarten, im unsure if he can start if he doesn't know how to write."
Plenty of kids start kindergarten with never having been shown the alphabet much less knowing how to write, so I see no problems there. The only thing teaching your child these things before hand does is give him a step up and making it easier for the teacher to teach him. If your child can already write than that gives teachers one less thing to worry about so they can teach your child the other things they need to learn and the teacher is also able to give children who are struggling the attention they need to catch up. It sucks that we can't have one on one for our kids in public school but they sure do get to learn how to do things without constant supervision, which makes things easier at home too.
It would be nice if we could all homeschool, but that does not work for everyone, although all the scary stuff happening in schools sure makes the idea much more appealing.