I used to try and fight these interests, but since being diagnosed with ADHD I have learnt to embrace them.
If you avoid them, your mind will only continue to search your horizon for other things to grab the senses and raise those dopamine levels.
A new interest provides genuine rest for my busy mind.
If you find the constant change in interests frustrating, I would recommend investing more of your time in any interests which are ‘arty’, rather than ‘sciencey’. My own personal experience is that research associated with these interests never really reaches any kind of conclusion (because they are subjective) and therefore they tend to have more longevity.
Hope that helps and you find something that you can invest time in more consistently.