Snack ideas for 9mo, and timings

[MegBusset]

DS is eating pretty well at breakfast, lunch and tea, still has a mid-morning and mid-afternoon BF, but wondering if I should be giving him snacks as well? and if so, what and when? ie after or before the BFs?

His current routine is usually:

BF
Breakfast
Morning nap
BF
Lunch
Afternoon nap
BF
Tea
BF
Bed

or should I just stick with things as they are?

I think I started adding snacks about that age because she seemed to need it. Don't push it but if you want to add snacks then here are some ideas:

Cheese
Oatcakes
Biscuits
Fruit
Pancakes (freeze some between sheets of greaseproof when you're making them)
Cake (look up recipes for sugar free ones)
Bread