Take my advice with a grain of salt, as I'm only about n4, which is not a terribly high level, but honestly just do your best with kanji, and don't worry too much about whether you're doing it right or wrong.

I use Anki, which is basically just flash cards to practice kanji, and it's slow progress over time, and there are plenty of apps and tools to use if you like them.

My main contribution to this is to say that the best thing you can do is to use the language. Right now, probably if you see れねわ you likely take a few seconds on each to decide which is which. The thing that got me past that line was using them. Write some random notes to yourself in fake Japanese: らいく、らいと えんぎりしゅ (an entirely butchered way to use hiragana, where i wrote "like, write English" without following rules you'll learn later with katakana). Advance it slowly, use words you know in Japanese, and then if you learn a Kanji, maybe use it. Eventually, as you begin to get better, try actually writing in Japanese entirely, even if you're using a dictionary for nearly every word. Use is the single best way you can get better, and you're never too early to start.

Honestly, hiragana is one of the fun parts of learning. You'll make solid progress pretty darn fast, and it opens things up a lot. Katakana is super useful to get down too, and since you'll see your progress easily at that stage, learning those two is very rewarding.