If you really want to push a planted tank, I would look to drop GH to 4-5dGH and get KH down to 3dKH. I would look up Thrives dosing information and dose it anywhere from 8 to 10ppm NO3 as proxy. Keep up the 50% water changes and stop all root tabs going forward. Stop gravel vacuuming completely for now and increase water turnover to a minimum of 5X water volume. Triple the current plant load and add a decent clean up crew. Also, crank the CO2, and get that drop checker to mostly yellow. Keep an eye on the fish anytime you adjust CO2. In the picture, that drop checker is indicating low CO2. Only clean the glass and filter. Clean the glass weekly and the filter monthly.
The biggest problem right now, low CO² and KH is too high. I would also upgrade the light to something better.