Newbie lighting question

First grow going, one month in flower, seems like buds are only slowly getting bigger. Growing in 32”x 32” tent under 600w(advertised) LED. Watering with Nutes every 2-3 days. Thinking to add a pair of 2ft high output T5 lights. Definitely have room, heat may even help with tent in New England garage. Not sure if this is a good idea or overkill. Any advice appreciated. Thanks

600w advertised could be anything from 135w-345w if its a blurple LED. So yeah add the extra lights or get 315cmh if your feeling fruity and just use that.