This a rough sequence that we have followed for both my boys and it has worked absolutely amazing for us.
Listing it out here for your reference if you are clueless like me 5 years ago.
1. Sorting , Sorting big and small
2. One to one correspondence( blog)
3. 10 frame activities(on insta stories)
4. And now Number Recognition
We simply wrote down the numbers and asked J to wipe down the numbers as he called it out.
You can also try :
picking up the wooden number cutouts as they say the number, identifying numbers buttons in the lift , car number plates etc or simply use paper chits with numbers written on it.