Unfortunately, Baytril is an antibiotic. Baytril treats bacteria. It does not treat parasites. He/she will need a deworming/antiparasitical medication like Panacur.
The reptisun 10 bulb is a strong bulb. It's for desert animals. The 5 is for rainforest or tropical animals. The UVB bulbs are to help in the production of vitamin D3. Vitamin D3 is necessary for the absorption of calcium. It however, does to provide calcium at all. Your frog will still need calcium. Use caution in using a 10.0 with a tropical frog...the 5.0 should be fine if your frog is getting calcium. It is also a warmer bulb and could cause heat burns. The best recommendation would be to use the 5.0 and find a way to get your frog to take the calcium.
Tums...be careful using tums. Tums with added flavors or other additives such as dyes and binders to hold the tablets together in them are not safe for amphibians. Only plain calcium carbonate tums are okay. It is safer to use a properly made amphibian/reptile calcium supplement. Tums are not measured for amphibians in terms of dosing. They also do not crush well to a fine powder as the proper supplements are. I would recommend switching your amphibian/reptile calcium supplement to a different brand. There are several. My frogs seem to prefer Repcal over Flukers, though it may be coincidental. I hear most frogs don't mind the Repashy brand. You'll need to get the calcium in him/her in some way. MBD will only progress without calcium supplementation. Antibiotics and antiparasitics will not stop MBD.
Another thing you can do to assist in raising the amount of calcium your frog gets is to feed your insects safe, calcium sources. Romaine lettuce, kale, carrots, oranges, papaya. Be sure to rinse thoroughly in dechlorinated water prior to serving. Flukers and Repashy also make cricket and insect foods enriched with calcium. Flukers also adds calcium to their water gel. If you make your own water gel, you can use the calcium drops in the dechlorinated water you use to expand the gel.
Keep us posted. I hope your frog improves for you. I would continue the calcium drops in his water until he starts eating the crickets with the supplement. He may absorbing a small amount more than you think. Keep trying.