Yet another perspective here - as someone who came back to bass playing after a long layoff, for me it was all about stamina. Time and steady practice will help, but the game changer for me was a method book called "Bass Fitness - an Excercising Handbook" by Josquin Des Pres. On Amazon. My solution was 1-2 pages/per day (start at the very beginning, slowly), for 10-15 minutes every day. It will slowly build up your strength and agility.
And in the meantime, theres nothing wrong with playing it in the higher position, on lower strings - that's what they're there for! I only play 4 string so don't have that option, but take advantage of it until you get stronger. FWIW, I can play 3 hr gigs now doubling on both upright and electric without cramping or tiring - sometimes two nights in a row.
Keep at it with the exercises and in 2-3 months you'll be doing fine. The key for me is consistency - 10-15 minutes 5 or 6 days/week.
And in the meantime, theres nothing wrong with playing it in the higher position, on lower strings - that's what they're there for! I only play 4 string so don't have that option, but take advantage of it until you get stronger. FWIW, I can play 3 hr gigs now doubling on both upright and electric without cramping or tiring - sometimes two nights in a row.
Keep at it with the exercises and in 2-3 months you'll be doing fine. The key for me is consistency - 10-15 minutes 5 or 6 days/week.


