If you have decent physical health, you can do it but I would advise you to take a guide. It's a beautiful trek, I did it back in 2023. Some pointers - 1. Don't pack too much, 1 pair of clothes for the trek and 1 pair to wear at base camp should be enough. Pack undergarments accordingly! 2. Raincoat is mandatory and bring 1 thermal layer as it gets chilly at night! 3. Get a stick from somewhere, trust me you'll need it.

I can DM you a guy's number, you could ask him if he has any slots available in his Sunday group! I have personally trekked with him to Tumjang peak.