9 weeks old taking hours to have a feed

Hi everyone

I have a 9 week old that takes hours to have a feed, he is on cow and gate comfort and we are using timme toppe bottles with vari flow teats.

Tonight i was feeding him for 2 hours and he only had 3oz, was losing the will to live! 😬

Does anyone have any ideas/suggestions for making the feeding a abit quicker? I’ve made sure the teat is clear and the bottle top isn’t on too tight.

Thanks everyone