I always started small clones around 300ppm so I would add small amounts of your nutes to the bucket to boost up your ppm. I have no idea what those nutes of yours are and can't read the pic of the feed chart but I never followed a chart but went by the ppm or in the case of using hydro nutes in pots of soilless like ProMix HP used 1/4 of the max at that stage and upped the amounts as the plant needed. If the lower leaves are beginning to fade then up the nutes. If they are staying green then stay the course for now. Levels generally need to go up as the plants get bigger to a point lower than the max stated on the containers of nutes. I used AN 3-part for the bulk of my grows and never fed the max in any scenario. Follow their feed chart and fried plants are guaranteed.
When doing my DWC without changing nutes I'd top up with RO or distilled water about every 3 days. Let it mix for a while then check ppm and add small amounts of the nutes in the same ratio to raise it back up to my target level or a little higher if they were feeding heavy. With the AN pH Perfect nutes I never checked the pH where before those came out I'd be adding a few drops of conc. sulphuric acid at each top-up. Rarely had to check pH then too as it would be pretty consistent. I'd bump it down to around 5.4 and 3 days later it would be around 6.4 and 4 or 5 drops would knock it back to 5.4. The plants loved that swing it seemed but did just the same with the newer nutes that didn't need adjustment and shouldn't be adjusted at all.
Each strain can react differently to the same ppm tho so you learn to 'read' your plants after a while. Even plants grown from seed of the same strain can have different needs so it can be hard to dial in the feed. Clones are consistent tho.
Just woke up from an after dinner nap attack and the wind has died so going to run outside and play with my new drone.