expectations after bug poison treatment?

My dog (2 yr.) got into some bug poison yesterday. Took him straight to urgent care. He got doses to prevent seizures(successful) and to decrease his tremors. He threw up the poison and they gave him some fluids to run on for he couldn't eat until the next morning. This morning he was still quite shaky so I took him to the vet but he did eat an entire regular bowl meal and drank water. They gave me some methocarbamol and it worked instantly. It's supposed to be a quarter every 8 hours but by the eighth hour when it was time to take his second one, he wasn't showing any tremors at all which was great but still gave it to him anyway as instructed to do so. Doctor said ears, eyes, gums, bones are looking great. He isn't bloated and his organs didn't feel swollen to him. So we've only seen improvement. MY ONLY concern is the change in how much he's eaten and how much he's pooping. He ate a full bowl this morning and pooped a little less than usual this afternoon. It was a bit lighter color than usual but the texture is normal. Wagging his tail a lot. Super playful. Still seems really happy. Pooped again this evening but hasn't eaten much after. Just half a bowl. I gave him a treat and he ate it so he hasn't completely rejected food. Is this normal? Will it take time for him to start eating again? He obviously isn't constipated because he can poop, it's just less than normal. Experienced, informed nice people please. I stayed up all night with him last night. I've done all I can.