Being suspended in the air by a few centimeters, maybe a meter should be good enough to remove that risk.
I believe this definitely makes partial a more successful method for sure - the buttocks raised at least a metre from the ground because convulsions or movement of the legs seems less likely to move, hold or support the body against the full unconscious weight of the main upper body. The unconscious weight will always be heavier and harder to move than an unconscious convulsion, in my opinion.
It's no doubt that full suspension will always be more lethal, but I've looked at many different statistics online and the majority seem to note that partial hangings were more common than full suspensions - I'm sure this probably differs country by country though. For example I've seen two specific studies from India and full suspension seems most common there - one study of suicides resulting in death saw 80% of the subjects do full suspension, and a second study of attempted suicides resulting in hospital admission saw 80% of the subjects partially suspended (although it didn't specify the circumstances of how they were discovered, if they did it while they weren't home alone, if the ligature broke etc). I live in the U.K and I'm 6ft tall but there isn't a room I would be able to fully suspend from without my feet touching the ground once you've considered how much rope there would be between the anchor and after it's tightened around the neck. At least for someone my height, the ceilings and door frames just aren't tall enough. The only possible way I could fully suspend at home would be to open the attic and tie my ligature to one of the roof beams. I assume some people would be able to fully suspend from a stair beam / rail if they have them, but how common that would be I'm uncertain. The majority of U.K hangings seem to be done at home, followed by wooded areas or parks so I would also assume most of those were partially done, too. It's difficult to say for certain as these specific studies on suicides, that are accessible online, are few and far in between so a lot of the information needs to be or can be inferred from other reports. I like to look at individual cases because you're able to get a lot more background information about the circumstances surrounded the death, what led up to it, where and how it occurred. I've read a lot of these on judiciary.uk (you can search suicide in the search bar and click on the link for Suicides since 2015). While many cases on there will note 'Suspension by neck / by ligature', it rarely specifies whether it was full or partial suspension, but it does occasionally use language which indicates the method, for example, 'discovered slumped on the floor'. Unfortunately, these days they block out and censor a lot of information. I don't know if they caught wind that people with suicidal ideation had been accessing, reading and potentially becoming influenced by the reports, but many of the older reports are uncensored.
I plan to leave by partial hanging but I intend for my knees to be raised from the ground. I have a set up in my closet which is not tall enough for me to stand under the bar, but tall enough for my buttocks and knees to be raised off the ground. I don't believe the convulsions would be strong enough to manipulate my body in a way that would support my unconscious weight and prevent me from dying. My bar is a solid piece of metal so it's unlikely to bend and it's fixed quite strong to the wall. As a precaution I did cut some wooden beams to go underneath each end of the bar just to give it additional support. I just need the courage now.