Conscription was started in 2021. I’m not sure it was necessary. Russia is using primarily mercenary troops in the Ukraine. I heard a couple weeks ago they might send in regular troops. If they do the battle field will change a lot in the next couple weeks.
That is false. It was using regular troops in Hostomel (which they lost and lost their entire elite paratroopers, the VDV) and in the occupation of Kherson, Zaporizhia etc.
The mercenary "Wagner" (see the Nazi overtures) gruop is primarily in Bakhmut and throwing bodies at the area to try and gain SOME victory (which the Russians haven't had since March)
But there are no regular troops left, which is why Putin in September tried partial mobilization