Diet and Kitchen HELP!

Hii! I was recently diagnosed with HEDS, POTS, and fibromyalgia and they are also treating my MCAS symptoms but I don’t have a diagnosis for that. I was told I need to eat a lower histamine diet as well as stuff that’s good for my POTS and everything else. To say I have been struggling is an understatement! I often have bad fatigue but I have a stool for the kitchen on the way. Does anybody have any kitchen recommendations? When it comes to buying and making food I am utterly lost. I don’t eat much red meat and no pork. I love to cook but I feel like I have so many limitations and I struggle to find stuff that I enjoy and fits my diet. I also eat a lot of plant based foods so any suggestions with that or chicken/turkey would be so appreciated! Thank you so much!

Sorry if this is completely confusing😬 I wrote this with really bad brain fog😭😭