Can someone back me up here…

If my mum asked me to supply food for my LO I would. It may be a cost thing, it may be that it’s easier if you supply things the LO will eat. It may be for a number of reasons. I would 100% supply my mum with food for my LO if she asked me - because usually she’s doing me a favour watching him (plans or just needing a break). I don’t know your specific relationship with the grandad, the grandads finances or their situation. It may not be a “lack of effort”, or maybe it is.

I honestly don’t think it’s an issue ? Maybe he’s just not sure what to feed him?

If your lo is still on baby food then I don't see the issue in providing the food, that way you know what is being consumed and you don't need to worry that they'll feed stuff you wouldn't want your lo to be having. But if your lo is let's say aged 2+ years then yeah i don't understand why they can't just make food for your lo. Makes no sense. Idk if this is helpful or not that's just my opinion

I would always offer to provide the food for my LOs for whoever was looking after them. I think it’s polite to ask it makes looking after them easier, you know they’re being fed well and have something they like too. I assume you’re not paying for grandad to look after LO? Because if you are then I’d expect meals to be provided. Just my pov though ☺️

Not sure how old your LO is but I'm usually happy to provide food for my kids cos then I know what they're eating. My mum would check with me what she was cooking to check if that was ok but I can understand someone else maybe not being confident enough to know what kids want to eat. Depends a lot on the relationship you have with the person but from the sound of your post it sounds like there are other issues in that relationship

I don’t mind providing food for grandparents, makes it easier for them without stressing and just enjoy time with LO but I like the fact it keeps my LO in their routine with what they eat and when etc

I pack the fridge when my LO stays at my parents 🤣 because she eats a bit differently to my parents. My parents don't eat yoghurt or fruits like raspberries ir blueberries. They also don't drink a lot of milk. It just saves them going to the shops to buy all of this especially if she's staying there one night. My mum does think I'm being OTT though as she always cooks a dinner and stuff but I feel better doing this and I know if Olivia will refuse dinner, at least she will have the snacks and fruits that she likes 👍

What age is he and what age is grandad haha 🤣 that context would make my answer differ. If he’s like toddler age or younger maybe GD isn’t sure he’d eat what’s planned, if he’s older and doesn’t have food aversions or intolerances then yeh I’d be confused why they wouldn’t just be eating together? My boys are about to turn 4 and I don’t have to give any of their grandparents anything now as they’re confident in what they’ll eat and what to feed them, what not to etc x

I'd be happy to provide food for young children. My parents look after my kids 2 days a week and I always provided their breakfast and lunch (dinner is at home)