I would not relate athlete’s foot to how you are doing in your recovery. I tell most forum members to expect a 6-18 month recovery time to get over candida overgrowth, so you are are in the initial stages of getting better.
I would relate the athlete’s foot to your feet being moist and the yeast possibly becoming more aggressive. As you kill it and fight it off, it morph’s and adapts. Its perfectly normal for thrush to get worse, skin conditions to get worse, and athlete’s foot to get worse. What matters most is your long term health and improvement.
I would get a q-tip and swab some coconut oil on your feet and this should reduce it or eliminate it within days.
As far as your diet, the beef contains microbes which can bring harm and it causes constipation. When combined, this is a bad combination. Beef takes 2 days to digest whereas chicken and fish take hours.