i'm currently self-teaching myself two languages but one of them i spent years studying @ school and the other i was actually spoke as a young kid, so make of my advice what you will.
-make it fun. if it starts feeling like an obligation, you'll most likely want to stop. find learning resources that make french feel more like a hobby. it can be looking at a sentence in a song that you think sounds good and looking up the words in it, maybe studying the grammar from that. (of course there are a lot of unfun and even stressful moments in language learning.)
-doing a little every day (ish) is obviously the best method. try to stick to that as much as possible, but don't beat yourself up if you can't/don't want to literally study everyday, of course.
-practice your accent. i know there are some videos about what stops speakers of x language from being understood in y language, which could help you work on the most obvious pronunciation problems you might have.
-now, this is advice for a higher level, but: read even when you don't understand every word. don't stress over looking up every word and just try to get used to the language, or even guess what words are based on context.
bonne chance avec ton français!