Caffeine?!

So...I have 3 kids now as it is and work a full time job. I’m really lucky that fatigue has ever been my only symptom with my pregnancies but I swearrrrr it’s badddd this time. Like really bad. And so I know you are limited to 200 mg a day which I try to limit myself to but some days I take it to 250-3 just to make it through the day and still am passing out at like 8. So my question is,..is anyone else in the same boat as me or have prior pregnancies that they have felt the same n could you share your outcome? And yes I realize I SHOULD just suck it up n cut it out but being functional is a major struggle right now n praying for second trimester to come soon but also nervous about the effects the extra caffeine could have.