I do not want to give advice but I can only tell what I am doing.
I am watching dips and then nibbling here and there.
Definetely not buying a lot at one shoot since it just leads to highish average price but patiently buying little all the time.
Selling low is not something I am planning to do. I am not personally trying to speculate on bearish trend but I am buying and storing them for long term deeply frozen storage units.
I am interested in selling when the price starts to rise, and also then I am selling only small incremends at time since I do not need those money desperatively I have put into Monero so I am able to waite for the highest prices and still holding Moneros.
Cost averaging approaches tend to work very well over time particularly with a highly volatile asset such as Monero.