you can do it!! especially if you were going 5 days a week... just come back to the mat and practice every day​ trying to do something little like tripod headstand by the wall, this will make you feel more comfortable about being upsidedown.... i bet that you can already do headstand but the upsidedown feeling is what might be that mental block.... its always a mental block lol in time you will feel so normal being in tripod (and im talkng about the variation where your knees are on your elbows) dont even worry about legs in the sky just get used to fliping your perspective and the rest will come in time :)