How much do you spend on your young kids birthday?

I’m feeling really guilty right now. We’re having some money struggles and I’m not able to spend a whole lot on my sons birthday coming up. We’re having him a party with family, so he’ll get plenty of presents. We’re getting him a cake, decorating and all of that. But we’re only able to get him a few small toys. I don’t even know how much you “should” spend on your kids birthday. He’s only turning 5, and he’s has toys galore. He definitely isn’t going to miss out on anything. But I grew up very poor. Barely even got birthday or Christmas present, so now that my husband and I make decent money, I tend to go overboard and do as much as I can every year. But this year, everything’s hitting all at once and I’m just feeling guilty. I’ve always made sure to give my kids what I never had. And I know he won’t even realize how much it costs or care. He’s a sweet kid, he’d be happy no matter what he got. Idk. It’s just sending me back to being a sad little girl going back to school after my birthday being embarrassed when I was asked what I got. I’m just really overthinking it.