We’ve started a no screen time in the (school) week approach - DD is 4.5. To some extent it’s easy enough as she’s obviously at school the bulk of the day (we also did it around school nursery too).
She wakes up really early but knows there’s no tv/ tablet - we’ve never really done that apart from at the weekends so she has never expected it really. She likes to listen to her Yoto player sometimes in the morning, or there’s a few options in her bedroom if she wants to play for a bit; but by the time she’s eaten breakfast, we’ve done last minute reading book or tricky words or whatever it is, we’ve done teeth, got dressed etc there isn’t usually that much time leftover to kill no matter how early the start is!
After school it’s snack/ drink and either a chat or have a go at her reading book. I’m thinking this bit will be a lot easier as the weather improves as we can spend more time outdoors but even now if it’s dry we do go out for a scoot or borrow the neighbour’s dog for a quick walk. Otherwise she has a drawer full of pens, paper, stickers, tape, pritt-stick, kids scissors etc so she gets busy with that or sometimes one of us will sit and draw and colour with her. I get her to help with dinner, we eat, then we’ll do a board game or magnetic tiles or something. She still has quite an early bath and then bed time so again that helps.
I don’t set limits on tv time at the weekend/ in school holidays the same - it can creep up and I need to work on that too. We are usually out and about quite a bit too though, and will do more crafty things, cooking etc so it’s still a balance.