Is it truly sobriety if you still smoke weed?

Hit my 4th week of sobriety from alcohol today. Never knew the pain from alcohol induced gastritis would be a blessing in disguise. No longer crave drinking because I remember the pain caused from my gut. Went to a family party, was happy the next day to see everyone else hungover except for myself (that night was a huge trial). Anyways, I’ve been using weed as a sort of alternative to drinking, I only get high at night, at parties, or when I go to the movies. (Vastly different then how much I’d use alcohol, buzzed in the morning till I passed out at night)

I just want your peoples insight on if this is a “healthy” alternative (obviously better then putting poison in your body) or if it’s better to go stone cold. It’s helping me a lot in this time of my life but I’m just seeing if it’s true sobriety if you’re substituting one brain altering thing for another.