Advice on How to Manage Multiple OCD Themes?

My experience has a lot of similarities! You aren't alone. Do you have a current therapist? The best example I can give is your brain is acting like a toddler that is about to go to bed. A toddler that is about to go to bed is a very, very busy person. There are 1,000 different things that those little minds will think of that they must or need to do. The parent knows for a fact that the child just doesn't want to go to bed. Its really like fear of missing out which is a nice little OCD obsession in itself. Your brain is basically doing the same thing when you try to do erp with one topic. In that moment you are trying to put one obsession "to bed" for a night. Your brain creatively invents new and maybe even more stressful things to consider that would help you stay out of the ERP, like" I need to go potty" or something. Like" I better go check out my brother" or maybe something like" was that a bump? I heard on the house is there a robber?" Or you will try a reassuring thought, or maybe one of your mental rituals, or any number of things. But the core of who you are, just you, can involve some grounding to keep your mind in the present, and pop into that original trigger even if it feels like a 5 and something new is nocking at your brain like an 8. If you feel great like "I'm doing it I'm going to be free and that suddenly drops you from 5 or 7 down to a "2" you are stronger than that and know that those chemicals in your brain haven't run their course yet. All this sounds nice, and believe me I know a lot of what you are going through. I'm at the bottom of the hill with you in a lot of this. So again, this can be a bit tricky. If you have an OCD therapist and any of this resonates then bring it up and maybe it will help you both shortcut to a better bit of progress. Don't be surprised if you do ERP and feel drained. Really doing ERP takes a lot of effort.