I am 65 yr old widow can I take my Social Security few months early and stop my SSDI benefits
Hi. No, you can't voluntarily stop receiving Social Security disability (SSDI) benefits. The only way that you could stop your SSDI benefits is by withdrawing your application, which you almost certainly would NOT want to do because you would then have to repay all of the benefits you've been paid up to now.
If you're eligible for widow's benefits and if your widow's rate would be higher than your SSDI rate, you can simply apply for widow's benefits without stopping your SSDI benefits. Social Security would then continue to pay you your full SSDI benefit plus a partial widow's benefits. The two benefits would then essentially add up to the higher widow's rate.