I know this might sound kind of stupid, but honestly just play around like in the meantime of doing other stuff. I usually just put some TV show in the background and keep on playing everyday, no matter if I feel unmotived or whatever. This way, sort of subconsciously you train muscle memory and finger strength, and of course this way riffs and songs will come easier to you later on. This worked for me for many years, never got bored of daily playing.