Thx for the pic.

Sorry, but I don't grow these so I'm hoping others who do will stop by. Your mix sounds very water retaining, soil AND peat? I would have added about 30% Perlite to allow some faster draining. I hope that saucer isn't attached.

Maybe it is too wet (likes water but needs drainage and to dry out between watering. It does need indirect light. Mainly make sure its not sitting in a bog of wet peat and soil.

Your soil mix is way too water retentive and probably overly acidic if you used a good quantity of added peat to the mix.

I think the only way you will be able to save this plant is to repot ASAP in a faster draining soil mix, like the 5-1-1 or a modified gritty mix.

In my opinion it’s time to cut it back, like halfway. You can cut the top off and root it right in dirt. The existing stem will put out another top or more than one at the cut. Google ”propagating dracaena”.

@HU-680135289

Yes I am afraid at this point @kristimooneyhan advice is your only way to get the plant looking good again.

I would at least smell the soil for foul odors which would tell you there is rot. If that is not bad, I would cut it back. Look at the tissue where you made the cut . If it's slightly discolored keep cutting up until it looks healthy. I root them in water, some people have better luck in soil. Whichever is your preference is fine. Once the top is off the sick plant, it bounces back just fine in a heartbeat. With a little luck the remaining bottom stem will grow a new tuft of leaves.

I know this is drastic, but putting it off is kind of risky at this point in my opinion. Good luck.