Yes, as others have said, normal and to be enjoyed (by parents, I mean.)
But don't confuse 'learning to recite' from text, possibly aided by a picture, with 'reading' which, at this age it probably is not. [I was once a voluntary helper in a Reception class, where the children would confidently 'read' little books without even having the correct page open; they had done them so many times they knew them off by heart.]
And children can have very long attention spans, when it concerns something of interest to them, and that they probably gain a 'reward' from in self-satisfaction, and possibly a favourable comment from a parent.
At around that age, our DS got out a bag of coloured plastic clothes-pegs, and sorted them all into their colour batches.
So, construction toys, jigsaw puzzles, drawing materials, child-safe scissors for cutting up and sticking junk mail, or catalogues, matching games, such as dominoes, are all good activities to stimulate and develop learning, manual skills and memory. REAL toys are better than screen-based or artificial ones.
If you wish, for your own interest, keep a log of developmental stages and progress.