I had my dd just participate with fingerplays when she was 2, and sit in on the Bible readings of her older brother if she desired. She picked up things like writing the letter A and making a number 3 etc, counting to 10.
Last year, I just did the letter activity with her and the bible readings from the younger Bible Carrie has scheduled. This because she insisted on doing school like her older brothers. She did end up being able to recognize all the letters and learned all the letter sounds and able to write part of her name she has a double name

and she started writing a lot of the letters
This year we are doing all activities as planned from LHTH and we are both having a blast. She even wanted to do school while on vacation.
Now with that said, I would not have done LHTH the 2 previous years, if she was not tagging along, being that she is my 3rd child and I want her to be able to relax, she's a bit of a perfectionist

(My first born did not have that privileged to be relaxed at that age, I've come a long way)
I know others have stretched LHTH over 2 years, but for me it's so short and sweet I like doing it at full pace and it only takes 20-30 minutes a day.
Success in deciding what will work for your family as each child and situation is so different, may the grace of God be with you
