Type 2 I've been ill today

maybe take those pills called imodium , if you are sure it is diorhea... this medicine can stop that... if you dont eat , then also don´t worry of the metformin... it doesn´t do that much difference... just focus on getting well

try eating some salty bisquits and maybe a glass of sugary drink....
or get some icecubes and have them melt slowly in your mouth so maybe a little water will stay inboard

A duvet box of tissues a good film. Hope you are feeling better soon. Can't advise about meds as I'm T1 sorry x

I would just sip small amounts of water, say every half hour.

I would give my stomach a rest from any food till the morning.

I'm not a doctor this is just what I do. I hope you feel better soon.

if it get worse phone a doctor