Mine was meant to be XH had DD all day Monday, did nursery pick up and drop off on a Tuesday, and nursery drop off on a Thursday AM, then see her on a Sunday AM. No overnights (she was 2, he wasn't set up to have her overnight and didn't seem particularly keen). All of this was centered around his work (shifts).
In reality he can't seem to meet DD's needs (think not changing nappies regularly, not feeding her decent food, not encouraging her to drink and her avoiding using the toilet then having accidents/getting UTIs etc). I reduced his all day Monday and his Sunday to only 4-5 hours each day in one go maybe 14 months ago. DD is 4 now, and he hasn't asked to increase contact. She starts school in September and the Monday will then stop in term time. I don't plan to offer him extra time at weekends because I will also 'lose' my weekday off with her when she starts school too, and I'm not convinced it's in her best interests to spend more time with him and less with me right when school starts.
My mum has ended up stepping in and crafting a really nice relationship with DD. She has had her overnight a few times so I can go away for work/to a wedding. Ideally her dad would be able to do that but we've been split two years and he hasn't stepped up. Countless times I've missed out because I've put DD first, which doesn't seem to be a thing for him (often it's 'I can't do nursery run on X because I am doing Y, which means I have to sack off an hour of work to do it with two days notice), and I'm in a place now where 1) he needs to be pro active and drive his relationship with DD, because I'm not sure me pushing it is right and 2) if I don't think it's in her best interests, I won't support it.
I did get legal advice before reducing contact and stepping back a bit. I have no doubt it would be better for DD to have her dad play a more active role, but he doesn't step up and I won't try to force it, because I think the fallout will be bigger for DD further down the line.