Writers block - help!

Last year, I decided to finally peruse seriously writing my first book (based on an idea i’ve had for years, it’s a contemporary romance). I am really happy with my idea and think it could go somewhere.

I’ve managed to write a good chunk for the first part in a few months but I have slowly drifted away from writing. I think I am struggling to find the right phrasing for what I am trying to convey and ways to fill time between key events which makes me lose motivation to write. If that makes sense?

I’ve started writing future chapters when I have my moments of inspiration but I don’t know if this is a good idea? Will it mean I lose direction?

Please help and give some tips to combat writers block!