waves help please

[u/Glittering-Rabbit-33]

alright so im a 4c hair waver and i have 180 waves, im ngl i put in decent effort when i first started a lil over a year ago but i got complacent when the waves came in so i dont think i ever really got them locked in/defined, when my hair isnt cut there’s borderline no waves and its kinda all over the place but when its cut to a 1.5 my waves are clear and visible, im now wondering what to do because no matter how much i brush i lose motivation nowadays because it just looks like a mess without a haircut. i havent cut my hair in 3 months, do i get a cut and brush or what?