How often to use L-theanine, lemon balm and liposomal melatonine

I have measured my sleep with an oura ring for 4 months.
I fall asleep quite quickly but I have a lot of awakenings and quite low deep sleep and rem sleep.

I have used a tablet with 300 mg lemon balm and 200 mg L-theanine for the last 2 weeks.
My sleep has improved where I more often have around 1 hour rem or deep and the other one around 40 min.
My sleep efficiency has gone up also.
I also noticed a bigger emotional control .

Liposomal melatonine I have taken for longer and I noticed some improvements but not as much. Recently had a 1month break.

How often can I take these without it causing problems?

"Lemon balm should only be used for a short period of time. A general rule of thumb is to take one week off after every three weeks of use. You shouldn’t take lemon balm for longer than four months at a time without a break."

Can I take L-theanine daily? And order another one that only have that.
Or is good to take a break from both at the same time?

Any problems with taking melatonine daily?

Interesting about the lemon balm. I was not aware it could only be taken short term and with breaks. Is there a reference you can link to about the lemon balm?

Does anyone know if L-theanine can be taken as needed for anxiety and sleep or does it need time to build up in your system? I always feel extra off during the full moon and I have been looking for something to take during that time,