@Harvey11 Here are some previous topics on the subject. You Tube has lots of videos on this subject. Welcome back and hope this helps. 
Any tips or advise for a disabled male - Firearm Training - USCCA Community (usconcealedcarry.com)
Disabled Defenders - Firearm Training - USCCA Community (usconcealedcarry.com)
This one has lots of links.
Ideas to carry on wheelchair - Guns & Gear - USCCA Community (usconcealedcarry.com)
Post stroke - Miscellaneous - USCCA Community (usconcealedcarry.com)