Welcome to Second/Third Grade- Overview
Second and third grade still need foundation work. A lot of that growth happens by reading every day.
If a phonics skill never got solid in first grade, come back to it now. Review is not going backward.
Spend a few minutes on the harder phonics charts. Many of those were made with second graders in mind.
The skill is listed on the front of each packet, so you can pick the one your child still needs.
The same charts help reading and writing.