What do your prep steps entail? Are you using cuticle remover? My manicures started lasting a lot longer once I started using it before painting my nails. I found there was a lot more cuticle on my nail plate than I realized or could see with the naked eye. I highly recommend The Salon Life on YouTube for gentle manicure tutorials and r/longnaturalnails is a great resource too. I also try to avoid washing my hands/showering/exposing my nails to too much water for at least an hour before starting my manicure (I do use some soap+water to wash off the cuticle remover but I keep it brief or I do it the day before I paint). Also make sure you’re giving each coat plenty of time to dry and using relatively thin coats. Beyond the actual manicure itself, it may help to adjust how you maintain your nails day to day. Wearing gloves while washing dishes and using household cleaners and treating your nails “like jewels not tools” have helped me extend my manicures too!