Even if your fingers used to be able to do this, if they haven't done so for a few years, a lorra practice may be needed, DNAMHIKT.
In separate news, I have revived an old guitar that has been in my loft for 30 plus years, belonged to a mate that slipped off the dish, so it has sentimental value, although zero commercial. It is a nameless steel acoustic, with a fret after the nut (I've, the nut is not functional) , should tell you everything. I've taken it to the caravan as a practice thing, but the top strings buzz and the E doesn't play the last fret. I was considering slackening the truss rod, or in desperation shimming that first fret. Any alternative suggestions?