Food/drink

Hi mummies I need some help!

My 8 and a half month old will not eat or drink the same amount he’s use to drinking and eating.

I’m not quite sure what this is? He’s been like for for about 4 days now and it’s driving me crazy😫

Does anyone have any ideas what it could be?

He hasn’t got any teeth yet so I’m wondering maybe that’s why? He’s also got a little bit of a cold too

He’s finding it hard to fall asleep too.....

If anyone has any advice please let me know

Thankyou!