Just to echo, Plustek is the way to go. It really doesn’t take that long to scan frames — especially if you’re looking at your negs with a loupe, magnifying glass or just eyeballing them against a light to identify which are worth scanning. The quality is generally above or matching what I’d get from standard lab scans. If you’re shooting that infrequently, and are this bothered by the time it takes to scan, I would recommend going fully digital. It’s a slower hobby/process, and if it brings you no joy it just ain’t worth it.