Continue to practice phonemes at least 15 minutes a day.

Have your student say all of the sounds of the phoneme as you point.

Have your student practice writing the phoneme from memory as you say all of it's sounds(do not use it's letter name).

You can now add in a few new 2-letter phonemes on the worksheet as well:

th, or, ar, ee, wh, ow, oo

New from list C are: oa, ou, & er

New from List D: ay, ck, ie, ea, ai

You can find the 2 letter phonemes and how to say them on the 72 phonemes sheet in resources if you don't already have it.