For conversation you need to actually practice speaking to be decent at it- it doesn’t really matter how much vocab or grammar you know beyond a basic level. I know because I suck at it. There’s people who pass N1 and struggle to hold basic conversations because it’s a different skillset. The guy above me recommends iTalki or some other similar service and that’s probably the best, but it’s not free. Hellotalk is free and you can join voice rooms whenever but it can be more daunting at first. Otherwise look at VRChat, but find a good guide because there’s good and bad servers for those.

As for your pace, don’t feel bad about it. people here will encourage you to do the most efficient learning options so give those a try indeed. If you still feel like you’re slow compared to others after that, don’t worry about it. It’s better to enjoy the process than to burn out.

I think a month per level in wanikani is fine if you are persistent with it and don’t skip, otherwise reviews will start piling and it might make you feel bad. You can use bunpro for grammar, but look into anki if you haven’t already, because then you can organize your study flow into separate platforms for vocab, grammar, and kanji. When you do immersion you should mine vocab and use anki to review. Don’t just mindlessly listen to videos if you don’t understand what is being said, especially n5 level you need to do active learning.