Vyvance tolerance

I'm not using Vyvance for ADHD but to treat my residual symptoms of resistant depression. I'm aware that the tolerance affect happens very fast for depression vs ADHD. Basically Vyvance takes my depression away, i want to get up from bed, i'm social, in a good mood, control anxiety, don't get overwhelme like usual and productive, so pretty much functionning normally. So trying to find the best way to deal with that tolerance that comes very fast, around 7 days and after almost no benefits and i don't care to go up cause that problem will just come again. Then i got to take a breack, i may not take any Vyvance or if the day is too hard a small dose. So the options i see: -tolerance breack reset but those days can be very hard mentally. - Tried to alternate between Vyvance and Concerta but Concerta doesn't do much at all for me. - Or trying a meds or a supplement to tried to reduce the tolerance effect and possibly lowering the dosage. There's some studies but not much and not much detail neither. I often see DMX and Memantine listed. I'm wondering if i would stop Vyvance for 2 weeks and started Memantine what could be the results. Also i was thinking, could taking Vyvance 5 days a week and alternating Memantine on the week-end could possibly be an interesting option? They say it can help with depression, anxiety, and with the withdrawls of stimulants. Because reading on Memantine, they say good for tolerance but possibly you will become tolerant to Memantine also if used everyday. Any infos on different options or on the usage of Memantine would be interesting.